Convection Heaters | McMaster-Carr

Radiate heat inside narrow spaces to keep equipment warm and dry. These slim heaters fit where standard ones don’t. They protect equipment from premature failure caused by cold, condensation, and humidity.

Without Built-In Control—Steel with Steel Cover

Heaters without built-in control require a temperature switch or controller (not included) to regulate the heat they put out.

Heaters with a steel cover guard against damage and prevent you from accidentally touching the heater.

							Overall				Mounting
	Heat Output, BTU/hr	Max. Space Heated @ Temp. Change	Wattage, W	Watt Density, W/in²	Current, amp	Max. Heat Output, ° F	Lg.	Ht.	Wd.	Surface Temp., ° F	Fasteners Included	No. of Holes	Hole Dia.		Each
Open Radiant Heaters—120V AC—Screw Terminals







				Surface Mount

				340	45 cu. ft. @ 10° F 22 cu. ft. @ 20° F 15 cu. ft. @ 30° F 11 cu. ft. @ 40° F	100	8.7	0.8	1,040	8 1/2"	3 1/2"	1 1/2"	765	No	2	3/8"	36415K32	000000


				500	66 cu. ft. @ 10° F 33 cu. ft. @ 20° F 22 cu. ft. @ 30° F 16 cu. ft. @ 40° F	150	6	1.3	1,040	8 1/2"	3 1/2"	1 1/2"	640	No	2	3/8"	36415K42	00000
				850	113 cu. ft. @ 10° F 56 cu. ft. @ 20° F 37 cu. ft. @ 30° F 28 cu. ft. @ 40° F	250	10	2	1,040	8 1/2"	3 1/2"	1 1/2"	825	No	2	3/8"	36415K34	00000
				1,100	146 cu. ft. @ 10° F 73 cu. ft. @ 20° F 48 cu. ft. @ 30° F 36 cu. ft. @ 40° F	350	14	2.8	1,040	8 1/2"	3 1/2"	1 1/2"	990	No	2	3/8"	36415K36	00000
				1,700	226 cu. ft. @ 10° F 113 cu. ft. @ 20° F 75 cu. ft. @ 30° F 56 cu. ft. @ 40° F	500	20	4.2	1,040	8 1/2"	3 1/2"	1 1/2"	1,120	No	2	3/8"	36415K43	00000


				Open Radiant Heaters—240V AC—Screw Terminals







								Surface Mount

								1,700	226 cu. ft. @ 10° F 113 cu. ft. @ 20° F 75 cu. ft. @ 30° F 56 cu. ft. @ 40° F	500	20	2.1	1,040	8 1/2"	3 1/2"	1 1/2"	595	No	2	3/8"	36415K45	00000


								Open Radiant Heaters—250V AC—Screw Terminals







												Surface Mount

												850	113 cu. ft. @ 10° F 56 cu. ft. @ 20° F 37 cu. ft. @ 30° F 28 cu. ft. @ 40° F	250	10	1	1,040	8 1/2"	3 1/2"	1 1/2"	830	No	2	3/8"	36415K35	00000


												1,100	146 cu. ft. @ 10° F 73 cu. ft. @ 20° F 48 cu. ft. @ 30° F 36 cu. ft. @ 40° F	350	14	1.4	1,040	8 1/2"	3 1/2"	1 1/2"	990	No	2	3/8"	36415K37	00000

With Fixed Thermostat—Silicone Rubber with Aluminum Plate

Heaters with a fixed thermostat have a set range that you cannot adjust.

Heaters with a thermostat automatically turn on and off to maintain the set temperature range.

							Overall					Mounting
	Heat Output, BTU/hr	Max. Space Heated @ Temp. Change	Wattage, W	Watt Density, W/in²	Current, amp	Max. Heat Output, ° F	Lg.	Ht.	Wd.	Surface Temp., ° F	Certification	Fasteners Included	No. of Holes	Hole Dia.	Ctr.-to-Ctr.	Flange Ht.		Each
Enclosed Radiant Heaters—120V AC—Wire Leads







				40° F to 60° F Temperature Setting

				200	26 cu. ft. @ 10° F 13 cu. ft. @ 20° F 8 cu. ft. @ 30° F 6 cu. ft. @ 40° F	60	5	0.52	60	6"	9/16"	2"	65	CSA Certified, UL Recognized Component	No	2	1/4"	4"	1/2"	3654K12	0000000


				400	53 cu. ft. @ 10° F 26 cu. ft. @ 20° F 17 cu. ft. @ 30° F 13 cu. ft. @ 40° F	120	5	1.04	60	12"	9/16"	2"	65	CSA Certified, UL Recognized Component	No	2	1/4"	10"	1/2"	3654K22	000000




						105° F to 140° F Temperature Setting

						200	26 cu. ft. @ 10° F 13 cu. ft. @ 20° F 8 cu. ft. @ 30° F 6 cu. ft. @ 40° F	60	5	0.52	140	6"	9/16"	2"	145	CSA Certified, UL Recognized Component	No	2	1/4"	4"	1/2"	3654K13	000000


						400	53 cu. ft. @ 10° F 26 cu. ft. @ 20° F 17 cu. ft. @ 30° F 13 cu. ft. @ 40° F	120	5	1.04	140	12"	9/16"	2"	145	CSA Certified, UL Recognized Component	No	2	1/4"	10"	1/2"	3654K23	000000




								150° F to 180° F Temperature Setting

								200	26 cu. ft. @ 10° F 13 cu. ft. @ 20° F 8 cu. ft. @ 30° F 6 cu. ft. @ 40° F	60	5	0.52	180	6"	9/16"	2"	180	CSA Certified, UL Recognized Component	No	2	1/4"	4"	1/2"	3654K14	000000


								400	53 cu. ft. @ 10° F 26 cu. ft. @ 20° F 17 cu. ft. @ 30° F 13 cu. ft. @ 40° F	120	5	1.04	180	12"	9/16"	2"	180	CSA Certified, UL Recognized Component	No	2	1/4"	10"	1/2"	3654K24	000000

With Adjustable Thermostat—Steel with Steel Cover

Those with an adjustable thermostat have a dial to manually change the temperature range.

Heaters with a thermostat automatically turn on and off to maintain the set temperature range.

Heaters with a steel cover guard against damage and prevent you from accidentally touching the heater.

							Overall				Mounting
	Heat Output, BTU/hr	Max. Space Heated @ Temp. Change	Wattage, W	Watt Density, W/in²	Current, amp	Max. Heat Output, ° F	Lg.	Ht.	Wd.	Surface Temp., ° F	Fasteners Included	No. of Holes	Hole Dia.		Each
Open Radiant Heaters—120V AC—Screw Terminals







				Surface Mount

				340	45 cu. ft. @ 10° F 22 cu. ft. @ 20° F 15 cu. ft. @ 30° F 11 cu. ft. @ 40° F	100	8.7	0.8	1,040	8 1/2"	3 1/2"	1 1/2"	765	No	2	3/8"	36415K22	0000000


				500	66 cu. ft. @ 10° F 33 cu. ft. @ 20° F 22 cu. ft. @ 30° F 16 cu. ft. @ 40° F	150	6	1.3	1,040	8 1/2"	3 1/2"	1 1/2"	640	No	2	3/8"	36415K23	000000
				850	113 cu. ft. @ 10° F 56 cu. ft. @ 20° F 37 cu. ft. @ 30° F 28 cu. ft. @ 40° F	250	10	2	1,040	8 1/2"	3 1/2"	1 1/2"	825	No	2	3/8"	36415K24	000000
				850	113 cu. ft. @ 10° F 56 cu. ft. @ 20° F 37 cu. ft. @ 30° F 28 cu. ft. @ 40° F	350	14	2.8	1,040	8 1/2"	3 1/2"	1 1/2"	990	No	2	3/8"	36415K25	000000
				1,700	226 cu. ft. @ 10° F 113 cu. ft. @ 20° F 75 cu. ft. @ 30° F 56 cu. ft. @ 40° F	500	20	4.2	1,040	8 1/2"	3 1/2"	1 1/2"	1,120	No	2	3/8"	36415K26	000000


				Open Radiant Heaters—240V AC—Screw Terminals







								Surface Mount

								1,700	226 cu. ft. @ 10° F 113 cu. ft. @ 20° F 75 cu. ft. @ 30° F 56 cu. ft. @ 40° F	500	20	2.1	1,040	8 1/2"	3 1/2"	1 1/2"	595	No	2	3/8"	36415K61	000000


								Open Radiant Heaters—250V AC—Screw Terminals







												Surface Mount

												850	113 cu. ft. @ 10° F 56 cu. ft. @ 20° F 37 cu. ft. @ 30° F 28 cu. ft. @ 40° F	250	10	1	1,040	8 1/2"	3 1/2"	1 1/2"	830	No	2	3/8"	36415K57	000000

Hazardous Location Wall-Mount Small-Space Electric Heaters

Use where flammable gases and vapors are present—these heaters meet NEC Class I, Divisions 1 and 2, Groups C and D. They use convection to circulate warm air in small spaces. All have a built-in thermostat.

With Thermostat

Image of Product. Front orientation. Space Heaters. Hazardous Location Wall-Mount Small-Space Electric Heaters .

						Overall			Housing						Mounting
	Heat Output, BTU/hr	Max. Space Heated @ Temp. Change	Airflow	Wattage, W	Current, amp	Ht.	Wd.	Dp.	Material	Color	Includes	Environment	Hazardous Location Rating	Certification	Fasteners Included	Hole Dia.		Each
120V AC, Single Phase—Wire Leads







				50° F to 90° F Temperature Setting

				6,100	810 cu. ft. @ 10° F 400 cu. ft. @ 20° F 270 cu. ft. @ 30° F 200 cu. ft. @ 40° F	Not Rated	1,800	15	18"	40"	9"	Painted Steel	Gray	Mounting Bracket	Hazardous	NEC Class I Divisions 1, 2 Groups C, D	ETL Listed, C-ETL Listed	No	3/8"	1752K61	000000000


				208V AC, Single Phase—Wire Leads







								50° F to 90° F Temperature Setting

								6,100	810 cu. ft. @ 10° F 400 cu. ft. @ 20° F 270 cu. ft. @ 30° F 200 cu. ft. @ 40° F	Not Rated	1,800	8.7	18"	40"	9"	Painted Steel	Gray	Mounting Bracket	Hazardous	NEC Class I Divisions 1, 2 Groups C, D	ETL Listed, C-ETL Listed	No	3/8"	1752K62	00000000


								12,200	1,620 cu. ft. @ 10° F 810 cu. ft. @ 20° F 540 cu. ft. @ 30° F 400 cu. ft. @ 40° F	Not Rated	3,600	17.3	18"	40"	9"	Painted Steel	Gray	Mounting Bracket	Hazardous	NEC Class I Divisions 1, 2 Groups C, D	ETL Listed, C-ETL Listed	No	3/8"	1752K64	00000000
								25,900	3,450 cu. ft. @ 10° F 1,720 cu. ft. @ 20° F 1,150 cu. ft. @ 30° F 860 cu. ft. @ 40° F	Not Rated	7,600	36.5	18"	66"	9"	Painted Steel	Gray	Mounting Bracket	Hazardous	NEC Class I Divisions 1, 2 Groups C, D	ETL Listed, C-ETL Listed	No	3/8"	1752K67	00000000


								240V AC, Single Phase—Wire Leads







												50° F to 90° F Temperature Setting

												6,100	810 cu. ft. @ 10° F 400 cu. ft. @ 20° F 270 cu. ft. @ 30° F 200 cu. ft. @ 40° F	Not Rated	1,800	7.5	18"	40"	9"	Painted Steel	Gray	Mounting Bracket	Hazardous	NEC Class I Divisions 1, 2 Groups C, D	ETL Listed, C-ETL Listed	No	3/8"	1752K63	00000000


												12,200	1,620 cu. ft. @ 10° F 810 cu. ft. @ 20° F 540 cu. ft. @ 30° F 400 cu. ft. @ 40° F	Not Rated	3,600	15	18"	40"	9"	Painted Steel	Gray	Mounting Bracket	Hazardous	NEC Class I Divisions 1, 2 Groups C, D	ETL Listed, C-ETL Listed	No	3/8"	1752K65	00000000
												25,900	3,450 cu. ft. @ 10° F 1,720 cu. ft. @ 20° F 1,150 cu. ft. @ 30° F 860 cu. ft. @ 40° F	Not Rated	7,600	31.7	18"	66"	9"	Painted Steel	Gray	Mounting Bracket	Hazardous	NEC Class I Divisions 1, 2 Groups C, D	ETL Listed, C-ETL Listed	No	3/8"	1752K68	00000000


												480V AC, Single Phase—Wire Leads







																50° F to 90° F Temperature Setting

																12,200	1,620 cu. ft. @ 10° F 810 cu. ft. @ 20° F 540 cu. ft. @ 30° F 400 cu. ft. @ 40° F	Not Rated	3,600	7.5	18"	40"	9"	Painted Steel	Gray	Mounting Bracket	Hazardous	NEC Class I Divisions 1, 2 Groups C, D	ETL Listed, C-ETL Listed	No	3/8"	1752K66	00000000


																25,900	3,450 cu. ft. @ 10° F 1,720 cu. ft. @ 20° F 1,150 cu. ft. @ 30° F 860 cu. ft. @ 40° F	Not Rated	7,600	15.8	18"	64"	9"	Painted Steel	Gray	Mounting Bracket	Hazardous	NEC Class I Divisions 1, 2 Groups C, D	ETL Listed, C-ETL Listed	No	3/8"	1752K69	00000000

Portable Large-Space Gas Heaters

Style A

Built for big jobs, these are powerful space heaters.

All have a safety shut-off that cuts the gas supply if the flame goes out.

Propane Heater—Propane heaters have a regulator with a NGO connection (the same connection between your gas grill and propane tank).

Knob Control—On heaters controlled with a knob, turn the knob to adjust heat output.

Style A—Style A heaters use convection to circulate warm air. They have a pilot light ignition and do not require electricity.

							Inlet					Overall
	Style	Heat Output, BTU/hr	Max. Space Heated @ Temp. Change	Airflow	Req. Propane Tank Size, lb.	Max. Fuel Consumption	Thread Type	Gender	Fitting Connection	Thread Type	For Tube OD	Ht.	Wd.	Dp.	Housing Material	Includes		Each
Natural Gas Heaters with Knob







				Pilot Light Ignition

				A	100,000	13,300 cu. ft. @ 10° F 6,600 cu. ft. @ 20° F 4,400 cu. ft. @ 30° F 3,300 cu. ft. @ 40° F	Not Rated	—	100 ft³/hr	—	Male	37° Flared	UN/UNF (JIC)	1/2"	19"	16"	16"	Steel	—	1738K21	0000000


				Propane Heaters with Knob







								Pilot Light Ignition

								A	80,000	10,660 cu. ft. @ 10° F 5,330 cu. ft. @ 20° F 3,550 cu. ft. @ 30° F 2,660 cu. ft. @ 40° F	Not Rated	20	4 lb/hr	NGO	—	—	—	—	16"	19"	22"	Steel	20-ft. Hose	1738K11	000000


								A	200,000	26,660 cu. ft. @ 10° F 13,330 cu. ft. @ 20° F 8,880 cu. ft. @ 30° F 6,660 cu. ft. @ 40° F	Not Rated	100	9.5 lb/hr	NGO	—	—	—	—	19"	15"	28"	Steel	20-ft. Hose	1738K16	000000

Surface-Mount Small-Space Electric Baseboard Heaters


	Thermostats

Often installed below windows, the low profile design keeps these heaters out of the way. They use convection to circulate warm air.

The housing has indentations to punch your own mounting holes.

208V AC/240V AC, Single Phase—Wire Leads—When operating the 208V AC/240V AC heaters at 208 volts AC, maximum area heated and heat output are reduced by 25%.

Thermostats—Heater-mount thermostats are sold separately.

	Heaters												Thermostats
						Overall			Housing
	Heat Output, BTU/hr	Max. Space Heated @ Temp. Change	Airflow	Wattage, W	Current, amp	Ht.	Wd.	Dp.	Material	Color		Each		Each
120V AC, Single Phase—Wire Leads



		1,700	220 cu. ft. @ 10° F 110 cu. ft. @ 20° F 70 cu. ft. @ 30° F 50 cu. ft. @ 40° F	Not Rated	500	4.2	7"	30"	3"	Painted Steel	White	1778K61	000000	1778K81	000000


		2,500	330 cu. ft. @ 10° F 170 cu. ft. @ 20° F 110 cu. ft. @ 30° F 80 cu. ft. @ 40° F	Not Rated	750	6.3	7"	36"	3"	Painted Steel	White	1778K341	00000	1778K81	00000
		3,400	450 cu. ft. @ 10° F 220 cu. ft. @ 20° F 150 cu. ft. @ 30° F 110 cu. ft. @ 40° F	Not Rated	1,000	8.3	7"	48"	3"	Painted Steel	White	1778K379	00000	1778K81	00000
		5,100	680 cu. ft. @ 10° F 340 cu. ft. @ 20° F 220 cu. ft. @ 30° F 170 cu. ft. @ 40° F	Not Rated	1,500	12.5	7"	72"	3"	Painted Steel	White	1778K4	000000	1778K81	00000


		208V AC/240V AC, Single Phase—Wire Leads



				3,400	450 cu. ft. @ 10° F 220 cu. ft. @ 20° F 150 cu. ft. @ 30° F 110 cu. ft. @ 40° F	Not Rated	1,000	4.2	7"	48"	3"	Painted Steel	White	1778K446	00000	1778K791	00000


				4,200	560 cu. ft. @ 10° F 280 cu. ft. @ 20° F 180 cu. ft. @ 30° F 140 cu. ft. @ 40° F	Not Rated	1,250	5.2	6 3/4"	60"	2 1/2"	Painted Steel	Beige	1778K57	00000	———	0
				5,100	680 cu. ft. @ 10° F 340 cu. ft. @ 20° F 220 cu. ft. @ 30° F 170 cu. ft. @ 40° F	Not Rated	1,500	6.3	7"	72"	3"	Painted Steel	White	1778K505	000000	1778K791	00000
				6,800	900 cu. ft. @ 10° F 450 cu. ft. @ 20° F 300 cu. ft. @ 30° F 220 cu. ft. @ 40° F	Not Rated	2,000	8.3	7"	96"	3"	Painted Steel	White	1778K174	000000	1778K791	00000
				8,500	1,130 cu. ft. @ 10° F 560 cu. ft. @ 20° F 370 cu. ft. @ 30° F 280 cu. ft. @ 40° F	Not Rated	2,500	10.4	7"	96"	3"	Painted Steel	White	1778K225	000000	1778K791	00000

Finned Strip Heating Elements for Duct, Ovens, and Dryers

These heating elements have a large surface area to quickly dissipate heat in air and inert gas heating systems used in ducts, ovens, and dryers. They have a 304 stainless steel heating element that resists corrosion and moisture. All heating elements require a temperature switch or controller (sold separately) to regulate heat output.

						Fin				Heating Element		Screw Terminal		Mounting
	Wattage, W	Watt Density, W/in²	Current, amp	Overall Lg.	Max. Heat Output, ° F	Lg.	Wd.	Ht.	Material	Lg.	Material	Thread Size	Ht.	Fasteners Included	Hole Ctr.-to-Ctr.		Each
120V AC, Single Phase







				Split Screw Terminal

				350	18	2.9	10 1/2"	1,200	5 3/4"	2"	1 3/8"	Nickel-Plated Steel	5 3/4"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K591	000000


				500	34	4.2	10 1/2"	1,200	5 3/4"	2"	1 3/8"	Nickel-Plated Steel	5 3/4"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K411	00000
				725	45	6	10 1/2"	1,200	5 3/4"	2"	1 3/8"	Nickel-Plated Steel	5 3/4"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K421	00000
				750	28	6.3	14"	1,200	9 1/4"	2"	1 3/8"	Nickel-Plated Steel	9 1/4"	304 Stainless Steel	10-32	5/8"	No	13"	3575K361	00000
				900	40	7.5	12"	1,200	7 1/4"	2"	1 3/8"	Nickel-Plated Steel	7 1/4"	304 Stainless Steel	10-32	5/8"	No	11"	3575K431	00000
				1,100	37	9.2	14"	1,200	9 1/4"	2"	1 3/8"	Nickel-Plated Steel	9 1/4"	304 Stainless Steel	10-32	5/8"	No	13"	3575K441	00000
				1,250	37	10.4	15 1/4"	1,200	10 1/2"	2"	1 3/8"	Nickel-Plated Steel	10 1/2"	304 Stainless Steel	10-32	5/8"	No	14 1/4"	3575K451	00000
				1,550	38	12.9	17 7/8"	1,200	13 1/8"	2"	1 3/8"	Nickel-Plated Steel	13 1/8"	304 Stainless Steel	10-32	5/8"	No	16 7/8"	3575K461	000000
				1,700	34	14.2	19 1/2"	1,200	14 3/4"	2"	1 3/8"	Nickel-Plated Steel	22"	304 Stainless Steel	10-32	5/8"	No	18 1/2"	3575K471	000000
				1,900	36	15.8	21"	1,200	16 1/4"	2"	1 3/8"	Nickel-Plated Steel	16 1/4"	304 Stainless Steel	10-32	5/8"	No	20"	3575K481	000000




						Inline Screw Terminal

						350	18	2.9	10 1/2"	1,200	6 1/2"	2"	1 3/8"	Nickel-Plated Steel	6 1/2"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K592	00000


						500	21	4.2	10 1/2"	1,200	6 1/2"	2"	1 3/8"	Nickel-Plated Steel	6 1/2"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K11	00000
						725	31	6	10 1/2"	1,200	6 1/2"	2"	1 3/8"	Nickel-Plated Steel	6 1/2"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K424	00000
						750	21	6.3	14"	1,200	10"	2"	1 3/8"	Nickel-Plated Steel	10"	304 Stainless Steel	10-32	5/8"	No	13"	3575K364	00000
						900	31	7.5	12"	1,200	8"	2"	1 3/8"	Nickel-Plated Steel	8"	304 Stainless Steel	10-32	5/8"	No	11"	3575K12	00000
						1,100	31	9.2	14"	1,200	10"	2"	1 3/8"	Nickel-Plated Steel	10"	304 Stainless Steel	10-32	5/8"	No	13"	3575K13	00000
						1,250	31	10.4	15 1/4"	1,200	11 1/4"	2"	1 3/8"	Nickel-Plated Steel	11 1/4"	304 Stainless Steel	10-32	5/8"	No	14 1/4"	3575K14	00000
						1,550	31	12.9	17 7/8"	1,200	13 7/8"	2"	1 3/8"	Nickel-Plated Steel	13 7/8"	304 Stainless Steel	10-32	5/8"	No	16 7/8"	3575K15	000000
						1,700	31	14.2	19 1/2"	1,200	15 1/2"	2"	1 3/8"	Nickel-Plated Steel	15 1/2"	304 Stainless Steel	10-32	5/8"	No	18 1/2"	3575K16	000000
						1,900	31	15.8	21"	1,200	17"	2"	1 3/8"	Nickel-Plated Steel	17"	304 Stainless Steel	10-32	5/8"	No	20"	3575K17	000000




								Offset Screw Terminal

								350	18	2.9	10 1/2"	1,200	5 3/4"	2"	1 3/8"	Nickel-Plated Steel	5 3/4"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K593	00000


								500	24	4.2	10 1/2"	1,200	5 3/4"	2"	1 3/8"	Nickel-Plated Steel	5 3/4"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K413	00000
								725	35	6	10 1/2"	1,200	5 3/4"	2"	1 3/8"	Nickel-Plated Steel	5 3/4"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K423	00000
								750	23	6.3	14"	1,200	9 1/4"	2"	1 3/8"	Nickel-Plated Steel	9 1/4"	304 Stainless Steel	10-32	5/8"	No	13"	3575K363	00000
								900	34	7.5	12"	1,200	7 1/4"	2"	1 3/8"	Nickel-Plated Steel	7 1/4"	304 Stainless Steel	10-32	5/8"	No	11"	3575K433	00000
								1,100	33	9.2	14"	1,200	9 1/4"	2"	1 3/8"	Nickel-Plated Steel	9 1/4"	304 Stainless Steel	10-32	5/8"	No	13"	3575K443	00000
								1,250	33	10.4	15 1/4"	1,200	10 1/2"	2"	1 3/8"	Nickel-Plated Steel	10 1/2"	304 Stainless Steel	10-32	5/8"	No	14 1/4"	3575K453	00000
								1,550	33	12.9	17 7/8"	1,200	13 1/8"	2"	1 3/8"	Nickel-Plated Steel	13 1/8"	304 Stainless Steel	10-32	5/8"	No	16 7/8"	3575K463	000000
								1,700	31	14.2	19 1/2"	1,200	14 3/4"	2"	1 3/8"	Nickel-Plated Steel	14 3/4"	304 Stainless Steel	10-32	5/8"	No	18 1/2"	3575K473	000000
								1,900	33	15.8	21"	1,200	16 1/4"	2"	1 3/8"	Nickel-Plated Steel	16 1/4"	304 Stainless Steel	10-32	5/8"	No	20"	3575K483	000000


								240V AC, Single Phase







										Split Screw Terminal

		500								25	2.1	10 1/2"	1,200	5 3/4"	2"	1 3/8"	Nickel-Plated Steel	5 3/4"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K511	00000


		725	45							3	10 1/2"	1,200	5 3/4"	2"	1 3/8"	Nickel-Plated Steel	5 3/4"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K521	00000
		750	28							3.1	14"	1,200	9 1/4"	2"	1 3/8"	Nickel-Plated Steel	9 1/4"	304 Stainless Steel	10-32	5/8"	No	13"	3575K851	00000
		900	40							3.8	12"	1,200	7 1/4"	2"	1 3/8"	Nickel-Plated Steel	7 1/4"	304 Stainless Steel	10-32	5/8"	No	11"	3575K531	00000
		1,100	37							4.6	14"	1,200	9 1/4"	2"	1 3/8"	Nickel-Plated Steel	9 1/4"	304 Stainless Steel	10-32	5/8"	No	13"	3575K541	00000
		1,250	37							5.2	15 1/4"	1,200	10 1/2"	2"	1 3/8"	Nickel-Plated Steel	10 1/2"	304 Stainless Steel	10-32	5/8"	No	14 1/4"	3575K551	00000
		1,550	38							6.5	17 7/8"	1,200	13 1/8"	2"	1 3/8"	Nickel-Plated Steel	13 1/8"	304 Stainless Steel	10-32	5/8"	No	16 7/8"	3575K561	000000
		1,700	36							7.1	19 1/2"	1,200	14 3/4"	2"	1 3/8"	Nickel-Plated Steel	14 3/4"	304 Stainless Steel	10-32	5/8"	No	18 1/2"	3575K571	000000
		1,900	36							7.9	21"	1,200	16 1/4"	2"	1 3/8"	Nickel-Plated Steel	16 1/4"	304 Stainless Steel	10-32	5/8"	No	20"	3575K581	000000
		2,200	30							9.2	23 3/4"	1,200	19"	2"	1 3/8"	Nickel-Plated Steel	19"	304 Stainless Steel	10-32	5/8"	No	22 3/4"	3575K611	000000
		2,400	35							10	25 1/2"	1,200	20 3/4"	2"	1 3/8"	Nickel-Plated Steel	20 3/4"	304 Stainless Steel	10-32	5/8"	No	24 1/2"	3575K631	000000


		2,500	34							10.4	26 3/4"	1,200	22"	2"	1 3/8"	Nickel-Plated Steel	22"	304 Stainless Steel	10-32	5/8"	No	25 3/4"	3575K641	000000
		2,800	29							11.7	30 1/2"	1,200	25 3/4"	2"	1 3/8"	Nickel-Plated Steel	25 3/4"	304 Stainless Steel	10-32	5/8"	No	29 1/2"	3575K671	000000
		3,150	32							13.1	33 1/2"	1,200	28 3/4"	2"	1 3/8"	Nickel-Plated Steel	28 3/4"	304 Stainless Steel	10-32	5/8"	No	32 1/2"	3575K681	000000
		3,450	33	14.4						35 7/8"	1,200	31 1/8"	2"	1 3/8"	Nickel-Plated Steel	31 1/8"	304 Stainless Steel	10-32	5/8"	No	34 7/8"	3575K691	000000
		4,150	31	17.3	42 1/2"					1,200	37 3/4"	2"	1 3/8"	Nickel-Plated Steel	37 3/4"	304 Stainless Steel	10-32	5/8"	No	41 1/2"	3575K711	000000




				Inline Screw Terminal

				500	21					2.1	10 1/2"	1,200	6 1/2"	2"	1 3/8"	Nickel-Plated Steel	6 1/2"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K21	00000


				725	31					3	10 1/2"	1,200	6 1/2"	2"	1 3/8"	Nickel-Plated Steel	6 1/2"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K524	00000
				750	21					3.1	14"	1,200	10"	2"	1 3/8"	Nickel-Plated Steel	10"	304 Stainless Steel	10-32	5/8"	No	13"	3575K854	00000
				900	31					3.8	12"	1,200	8"	2"	1 3/8"	Nickel-Plated Steel	8"	304 Stainless Steel	10-32	5/8"	No	11"	3575K22	00000
				1,100	35					4.6	14"	1,200	10"	2"	1 3/8"	Nickel-Plated Steel	10"	304 Stainless Steel	10-32	5/8"	No	13"	3575K23	00000
				1,250	31					5.2	15 1/4"	1,200	11 1/4"	2"	1 3/8"	Nickel-Plated Steel	11 1/4"	304 Stainless Steel	10-32	5/8"	No	14 1/4"	3575K24	00000
				1,550	31					6.5	17 7/8"	1,200	13 7/8"	2"	1 3/8"	Nickel-Plated Steel	13 7/8"	304 Stainless Steel	10-32	5/8"	No	16 7/8"	3575K25	000000
				1,700	31					7.1	19 1/2"	1,200	15 1/2"	2"	1 3/8"	Nickel-Plated Steel	15 1/2"	304 Stainless Steel	10-32	5/8"	No	18 1/2"	3575K26	000000
				1,900	31					7.9	21"	1,200	17"	2"	1 3/8"	Nickel-Plated Steel	17"	304 Stainless Steel	10-32	5/8"	No	20"	3575K27	000000
				2,200	31	9.2				23 3/4"	1,200	19 3/4"	2"	1 3/8"	Nickel-Plated Steel	19 3/4"	304 Stainless Steel	10-32	5/8"	No	22 3/4"	3575K28	000000
				2,400	32	10	25 1/2"			1,200	21 1/2"	2"	1 3/8"	Nickel-Plated Steel	21 1/2"	304 Stainless Steel	10-32	5/8"	No	24 1/2"	3575K29	000000


				2,500	30	10.4	26 3/4"			1,200	22 3/4"	2"	1 3/8"	Nickel-Plated Steel	22 3/4"	304 Stainless Steel	10-32	5/8"	No	25 3/4"	3575K3	000000
				2,800	30	11.7	30 1/2"			1,200	26 1/2"	2"	1 3/8"	Nickel-Plated Steel	26 1/2"	304 Stainless Steel	10-32	5/8"	No	29 1/2"	3575K31	000000
				3,150	30	13.1	33 1/2"			1,200	29 1/2"	2"	1 3/8"	Nickel-Plated Steel	29 1/2"	304 Stainless Steel	10-32	5/8"	No	32 1/2"	3575K32	000000
				3,450	31	14.4	35 7/8"			1,200	31 7/8"	2"	1 3/8"	Nickel-Plated Steel	31 7/8"	304 Stainless Steel	10-32	5/8"	No	34 7/8"	3575K33	000000
				4,150	31	17.3	42 1/2"			1,200	38 1/2"	2"	1 3/8"	Nickel-Plated Steel	38 1/2"	304 Stainless Steel	10-32	5/8"	No	41 1/2"	3575K35	000000




						Offset Screw Terminal

						500	24			2.1	10 1/2"	1,200	5 3/4"	2"	1 3/8"	Nickel-Plated Steel	5 3/4"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K513	00000


						725	35			3	10 1/2"	1,200	5 3/4"	2"	1 3/8"	Nickel-Plated Steel	5 3/4"	304 Stainless Steel	10-32	5/8"	No	9 1/2"	3575K523	00000
						750	23			3.1	14"	1,200	9 1/4"	2"	1 3/8"	Nickel-Plated Steel	9 1/4"	304 Stainless Steel	10-32	5/8"	No	13"	3575K853	00000
						900	34	3.8		12"	1,200	7 1/4"	2"	1 3/8"	Nickel-Plated Steel	7 1/4"	304 Stainless Steel	10-32	5/8"	No	11"	3575K533	00000
						1,100	33	4.6	14"	1,200	9 1/4"	2"	1 3/8"	Nickel-Plated Steel	9 1/4"	304 Stainless Steel	10-32	5/8"	No	13"	3575K543	00000
						1,250	33	5.2	15 1/4"	1,200	10 1/2"	2"	1 3/8"	Nickel-Plated Steel	10 1/2"	304 Stainless Steel	10-32	5/8"	No	14 1/4"	3575K553	00000
1,550						33	6.5	17 7/8"	1,200	13 1/8"	2"	1 3/8"	Nickel-Plated Steel	13 1/8"	304 Stainless Steel	10-32	5/8"	No	16 7/8"	3575K563	000000
1,700	33					7.1	19 1/2"	1,200	14 3/4"	2"	1 3/8"	Nickel-Plated Steel	14 3/4"	304 Stainless Steel	10-32	5/8"	No	18 1/2"	3575K573	000000
1,900	30					7.9	21"	1,200	16 1/4"	2"	1 3/8"	Nickel-Plated Steel	16 1/4"	304 Stainless Steel	10-32	5/8"	No	20"	3575K583	000000
2,200	33					9.2	23 3/4"	1,200	19"	2"	1 3/8"	Nickel-Plated Steel	16"	304 Stainless Steel	10-32	5/8"	No	22 3/4"	3575K613	000000
2,400	33					10	25 1/2"	1,200	20 3/4"	2"	1 3/8"	Nickel-Plated Steel	20 3/4"	304 Stainless Steel	10-32	5/8"	No	24 1/2"	3575K633	000000


2,500	32					10.4	26 3/4"	1,200	22"	2"	1 3/8"	Nickel-Plated Steel	22"	304 Stainless Steel	10-32	5/8"	No	25 3/4"	3575K643	000000
2,800	31					11.7	30 1/2"	1,200	25 3/4"	2"	1 3/8"	Nickel-Plated Steel	25 3/4"	304 Stainless Steel	10-32	5/8"	No	29 1/2"	3575K673	000000
3,150	31					13.1	33 1/2"	1,200	28 3/4"	2"	1 3/8"	Nickel-Plated Steel	28 3/4"	304 Stainless Steel	10-32	5/8"	No	32 1/2"	3575K683	000000
3,450	31					14.4	35 7/8"	1,200	31 1/8"	2"	1 3/8"	Nickel-Plated Steel	31 1/8"	304 Stainless Steel	10-32	5/8"	No	34 7/8"	3575K693	000000
4,150	31					17.3	42 1/2"	1,200	37 3/4"	2"	1 3/8"	Nickel-Plated Steel	37 3/4"	304 Stainless Steel	10-32	5/8"	No	41 1/2"	3575K713	000000

Finned Tubular Heating Elements for Duct, Ovens, and Dryers


M-Shape	Straight	U-Shape

These tubular heating elements minimize the risk of sparks and fire from combustible particles in the flow stream, making them a safer choice than open coil heating elements. Finned for increased surface area, they quickly dissipate heat in air and inert gas heating systems such as duct heating elements and convection ovens. Their sheath, fins, and fittings are made of stainless steel, which resists heat and corrosion better than steel. These heating elements require a temperature switch or control (sold separately) to regulate output.

Welded on One End—Heating elements with end fittings welded on one end have one fitting permanently welded for a secure connection, while the other fitting is loose to create room for tube expansion during heating. The extra space helps prevent damage.

						Fin			Heating Element		Screw Terminal
	Wattage, W	Watt Density, W/in²	Current, amp	Overall Lg.	Max. Heat Output, ° F	Lg.	Dia.	Material	Lg.	Material	Thread Size	Lg.		Each
120V AC, Single Phase







				Straight—Welded on One End

				1,000	60	8.33	23 1/2"	1,200	16 1/2"	15/16"	Stainless Steel	20"	304 Stainless Steel	8-32	1.125"	7085N13	0000000




						U-Shape—Welded on Both Ends

						1,000	60	8.33	12"	1,200	8 3/4"	15/16"	Stainless Steel	10 1/4"	304 Stainless Steel	8-32	1.125"	7085N42	000000




								M-Shape—Welded on Both Ends

								1,500	60	12.5	9 1/2"	1,200	6 1/4"	15/16"	Stainless Steel	7 3/4"	304 Stainless Steel	8-32	1.125"	7085N72	000000


								240V AC, Single Phase







												Straight—Welded on One End

												2,000	80	8.33	32 1/4"	1,200	25"	1 3/16"	Stainless Steel	28 1/4"	304 Stainless Steel	10-32	1.125"	7085N18	000000




														M-Shape—Welded on Both Ends

														3,000	80	12.5	12 1/4"	1,200	9"	1 3/16"	Stainless Steel	10 1/4"	304 Stainless Steel	10-32	1.125"	7085N77	000000


														4,000	80	16.67	15 1/4"	1,200	12"	1 3/16"	Stainless Steel	13 1/4"	304 Stainless Steel	10-32	1.125"	7085N78	000000


														480V AC, Single Phase







																		U-Shape—Welded on Both Ends

																		1,000	80	2.08	9 3/4"	1,200	6 1/2"	1 3/16"	Stainless Steel	7 3/4"	304 Stainless Steel	10-32	1.125"	7085N54	000000


																		2,000	80	4.17	15 3/4"	1,200	12 1/2"	1 3/16"	Stainless Steel	13 3/4"	304 Stainless Steel	10-32	1.125"	7085N56	000000
																		3,000	80	6.25	22 1/4"	1,200	19"	1 3/16"	Stainless Steel	20 1/4"	304 Stainless Steel	10-32	1.125"	7085N57	000000
4,000																		80	8.33	28 1/4"	1,200	25"	1 3/16"	Stainless Steel	26 1/4"	304 Stainless Steel	10-32	1.125"	7085N58	000000




		M-Shape—Welded on Both Ends

		3,000	80															6.25	12 1/4"	1,200	9"	1 3/16"	Stainless Steel	10 1/4"	304 Stainless Steel	10-32	1.125"	7085N85	000000


		4,000	80															8.33	15 1/4"	1,200	12"	1 3/16"	Stainless Steel	13 1/4"	304 Stainless Steel	10-32	1.125"	7085N86	000000
		6,000	80															12.5	21 1/4"	1,200	18"	1 3/16"	Stainless Steel	19 1/4"	304 Stainless Steel	10-32	1.125"	7085N88	000000
		7,000	80															14.58	24 1/4"	1,200	21"	1 3/16"	Stainless Steel	22 1/4"	304 Stainless Steel	10-32	1.125"	7085N89	000000