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Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

Gasket Material

333 Products

Component

Duct

Pair with fittings and accessories to convey and control airflow

170 products

Adjustment Sleeve

Close gaps between sections of duct without disassembling the line

43 products

Component

Transition between duct of different sizes

25 products

Standard Duct and Fittings

Deliver air for a range of HVAC applications, including exhaust and dust collection. Our basic duct, the round shape creates smoother, more efficient airflow than rectangular and oval duct. The male end is slightly smaller than the female, so sections join without clamps or tools.

Duct

Closed Duct

Pair with compatible fittings and accessories.

Corrosion-Resistant 304 Stainless Steel—The most corrosion-resistant metal duct we sell. It won’t rust or degrade in systems that exhaust chemical fumes or vent heat from industrial ovens and dryers.

Closed Duct—With a closed seam, this duct is stronger and less prone to air leaks than open duct. However, it’s not as quick to modify when installing.

					2 ft. Long		5 ft. Long
	Duct Size	ID	OD	Ga.		Each		Each
Corrosion-Resistant 304 Stainless Steel







				Closed Duct

				4	4"	3 7/8"	24	18005K29	000000	18005K101	0000000


				5	5"	4 7/8"	24	18005K31	00000	18005K102	000000
				6	6"	5 7/8"	24	18005K32	00000	18005K24	000000
				7	7"	6 7/8"	24	18005K33	000000	18005K25	000000
				8	8"	7 7/8"	24	18005K34	000000	18005K26	000000
				10	10"	9 7/8"	24	18005K35	000000	18005K27	000000
				12	12"	11 7/8"	24	18005K36	000000	18005K28	000000

90° Elbow Connectors

Change the direction of airflow when joining lengths of duct.

Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

Lightweight Aluminum—One-third the weight of steel, aluminum ductwork is easier to handle during installation. Like galvanized steel, it resists rust in wet environments but won’t last as long.

					Galvanized Steel		Corrosion-Resistant 304 Stainless Steel		Lightweight Aluminum
Duct Size	ID	OD	Seam Construction	Ga.		Each		Each		Each



	3	3"	2 7/8"	Welded	20	———	0	———	0	1773K312	0000000


	5	5"	4 7/8"	Welded	20	———	0	———	0	1773K313	000000
	7	7"	5 7/8"	Welded	20	———	0	———	0	1773K314	000000
	10	10"	9 7/8"	Welded	20	———	0	———	0	1773K315	000000
	12	12"	11 7/8"	Welded	20	———	0	———	0	1773K316	000000
	14	14"	13 7/8"	Welded	20	1768K207	0000000	1768K223	0000000	1773K317	000000
	16	16"	15 7/8"	Welded	20	1768K208	000000	1768K224	000000	———	0
	18	18"	17 7/8"	Welded	20	1768K209	000000	1768K225	000000	———	0
	20	20"	19 7/8"	Welded	20	1768K218	000000	1768K226	00000000	———	0
	22	22"	21 7/8"	Welded	20	1768K219	000000	———	0	———	0
	24	24"	23 7/8"	Welded	20	1768K221	000000	———	0	———	0

45° Elbow Connectors

Welded Seam

Change the direction of airflow when joining lengths of duct.

Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

					Galvanized Steel		Corrosion-Resistant 304 Stainless Steel		Lightweight Aluminum
Duct Size	ID	OD	Seam Construction	Ga.		Each		Each		Each



	3	3"	2 7/8"	Welded	20	———	0	———	0	1773K318	0000000


	5	5"	4 7/8"	Welded	20	———	0	———	0	1773K319	000000
	7	7"	6 7/8"	Welded	20	———	0	———	0	1773K321	000000
	10	10"	9 7/8"	Welded	20	———	0	———	0	1773K322	000000
	12	12"	11 7/8"	Welded	20	———	0	———	0	1773K323	000000
	14	14"	13 7/8"	Welded	20	1768K211	0000000	1768K227	0000000	1773K324	000000
	16	16"	15 7/8"	Welded	20	1768K212	000000	1768K228	000000	———	0
	18	18"	17 7/8"	Welded	20	———	0	1768K229	000000	———	0
	20	20"	19 7/8"	Welded	20	———	0	1768K231	000000	———	0

Straight Connectors

Join two lengths of duct.

Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

			Galvanized Steel
Duct Size	ID	Ga.		Each



	3	3"	26	1766K208	000000


	4	4"	30	1766K91	00000
	5	5"	30	1766K92	00000
	6	6"	30	1766K93	00000
	7	7"	30	1766K94	00000
	8	8"	30	1766K95	00000
	10	10"	28	1766K96	00000
	12	12"	26	1766K97	00000
	14	14"	26	1766K201	00000
	16	16"	26	1766K209	00000
	18	18"	26	1766K211	00000


	20	20"	26	1766K212	00000
	22	22"	26	1766K213	00000
	24	24"	26	1766K214	00000

Tee Connectors

Female × Female × Male

Split or merge airflow paths.

Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

				Galvanized Steel			Corrosion-Resistant 304 Stainless Steel
	Duct Size	ID	OD	Ga.		Each	Ga.		Each
Female × Female × Male



		10	10"	9 7/8"	—	———	0	24	1767K303	0000000


		12	12"	11 7/8"	—	———	0	24	1767K304	000000
		14	14"	13 7/8"	—	———	0	24	1767K308	000000
		16	16"	15 7/8"	—	———	0	24	1767K309	000000
		18	18"	17 7/8"	—	———	0	24	1767K311	000000
		20	20"	19 7/8"	24	1766K216	0000000	24	1767K312	000000
		22	22"	21 7/8"	22	1766K221	000000	—	———	0
		24	24"	23 7/8"	22	1766K222	000000	—	———	0

Straight Reducers

Female × Male

Male × Female

Transition between duct of different diameters. Reducers also join larger duct with smaller duct that connects to equipment.

Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

	Duct Size		ID		OD		Galvanized Steel			Corrosion-Resistant 304 Stainless Steel			Lightweight Aluminum
	(A)	(B)	(A)	(B)	(A)	(B)	Ga.		Each	Ga.		Each	Ga.		Each
Female × Male



		4	3	4"	—	—	2 7/8"	—	———	0	—	———	0	24	1773K325	000000


		12	8	12"	—	—	7 7/8"	—	———	0	24	1767K313	0000000	—	———	0
		12	10	12"	—	—	9 7/8"	—	———	0	—	———	0	24	1773K326	00000
		14	10	14"	—	—	9 7/8"	22	2013K704	000000	24	1767K314	000000	—	———	0
		14	12	14"	—	—	11 7/8"	22	2013K705	00000	—	———	0	—	———	0
		16	12	16"	—	—	11 7/8"	22	2013K706	00000	24	1767K315	000000	—	———	0
		16	14	16"	—	—	13 7/8"	22	2013K707	00000	—	———	0	—	———	0
		18	14	18"	—	—	13 7/8"	22	2013K708	00000	24	1767K316	000000	—	———	0
		18	16	18"	—	—	15 7/8"	22	2013K709	00000	—	———	0	—	———	0
		20	16	20"	—	—	15 7/8"	24	2013K714	00000	24	1767K317	000000	—	———	0
		22	18	22"	—	—	17 7/8"	24	2013K715	00000	—	———	0	—	———	0


		24	20	24"	—	—	19 7/8"	24	2013K716	000000	—	———	0	—	———	0


		Male × Female



				4	3	—	3"	3 7/8"	—	24	2013K711	00000	—	———	0	—	———	0


				5	4	—	4"	4 7/8"	—	24	2013K712	00000	—	———	0	—	———	0
				18	14	—	14"	17 7/8"	—	24	2013K713	00000	—	———	0	—	———	0
				20	18	—	18"	19 15/16"	—	24	2013K701	00000	—	———	0	—	———	0
				22	20	—	20"	21 15/16"	—	24	2013K702	00000	—	———	0	—	———	0
				24	22	—	22"	23 15/16"	—	24	2013K703	00000	—	———	0	—	———	0

Tee Reducers

Connect duct of different diameters to split or merge airflow.

Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

	Duct Size				OD		Galvanized Steel
	(A)	(B)	(C)	ID (A)	(B)	(C)	Ga.		Each
Female × Male × Male



		8	6	6	8"	5 7/8"	5 7/8"	24	1766K217	0000000


		10	8	8	10"	7 7/8"	7 7/8"	24	1766K218	000000
		12	8	8	12"	7 7/8"	7 7/8"	24	1766K219	000000

Duct Damper Handles

Pair with your own blade to create an economical damper for existing duct.

Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

	Galvanized Steel
For Max. Damper Blade Thk.		Each
0.022"	1786K21	00000

Duct Blast Gates

Open and close the slide to control airflow to sections of duct. Blast gates turn flow on or off.

Aluminum with 304 Stainless Steel Slide—These blast gates have a 304 stainless steel slide that holds up to moisture and mild chemicals better than galvanized steel. The aluminum body reduces stress on your duct.

			Overall
	Duct Size	OD	Wd.	Ht.	Dp.	Features		Each
Aluminum with 304 Stainless Steel Slide



		4	3 7/8"	5"	9 1/8"	1 7/8"	Locking Screw	1822K313	000000


		5	4 3/4"	6"	11 3/4"	2 1/8"	Locking Screw	1822K314	00000
		6	5 13/16"	7"	14 3/8"	2 1/8"	Locking Screw	1822K315	00000
		7	6 13/16"	8"	15 5/8"	2 1/2"	Locking Screw	1822K316	00000
		8	7 7/8"	9 5/8"	18 1/8"	3 1/2"	Locking Screw	1822K317	00000
		10	9 13/16"	11 3/8"	22 1/8"	3 3/4"	Locking Screw	1822K319	000000
		12	11 13/16"	13 1/4"	26 3/4"	3 5/8"	Locking Screw	1822K322	000000

Spiral Duct and Fittings

Reinforced with a continuous seam, this duct keeps its shape, even against suction from dust collection systems. On the inside, duct is smooth for efficient airflow. Because of its attractive look, spiral duct is often used for exposed heating and cooling systems.

Duct

Pair with compatible fittings and accessories.

Chemical-Resistant PVC-Coated Steel—This duct combines the strength of steel with the chemical resistance of plastic. More economical than 304 stainless steel and stronger than PVC, it’s often used to exhaust corrosive gases, vapors, and fumes.

			2 ft. Long			5 ft. Long
	Duct Size	ID	Ga.		Each	Ga.		Each
Chemical-Resistant PVC-Coated Steel



		4	4"	—	———	0	26	1889K211	000000


		5	5"	—	———	0	26	1889K212	000000
		6	6"	—	———	0	26	1889K213	000000
		7	7"	—	———	0	26	1889K214	000000
		8	8"	—	———	0	26	1889K215	000000
		9	9"	—	———	0	26	1889K216	000000
		10	10"	—	———	0	26	1889K217	000000
		12	12"	—	———	0	26	1889K219	000000


		Corrosion-Resistant 304 Stainless Steel



				4	4"	24	2561K11	000000	24	2561K41	000000


				6	6"	24	2561K12	00000	24	2561K42	000000
				8	8"	24	2561K13	000000	24	2561K43	000000
				10	10"	24	2561K14	000000	24	2561K44	000000

Straight Connectors

Join two lengths of duct.

Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

				Galvanized Steel			Chemical-Resistant PVC-Coated Steel			Corrosion-Resistant 304 Stainless Steel
	Duct Size	ID	OD	Ga.		Each	Ga.		Each	Ga.		Each
Male



		3	—	2 7/8"	24	5078K44	000000	—	———	0	—	———	0


		4	—	3 7/8"	24	5078K45	00000	26	1889K311	000000	24	2561K33	000000
		5	—	4 7/8"	24	5078K47	00000	26	1889K312	00000	—	———	0
		6	—	5 7/8"	24	5078K48	00000	26	1889K313	00000	24	2561K34	00000
		7	—	6 7/8"	—	———	0	26	1889K314	00000	—	———	0
		8	—	7 7/8"	24	5078K51	00000	26	1889K315	00000	24	2561K35	00000
		9	—	8 7/8"	—	———	0	26	1889K316	00000	—	———	0
		10	—	9 7/8"	24	5078K53	00000	26	1889K317	00000	24	2561K36	00000
		12	—	11 7/8"	24	5078K54	00000	26	1889K319	00000	—	———	0
		14	—	13 7/8"	22	5078K83	00000	—	———	0	—	———	0
		16	—	15 7/8"	22	5078K84	00000	—	———	0	—	———	0


		Female



				3	3"	—	24	5078K223	0000	—	———	0	—	———	0


				4	4"	—	24	5078K224	0000	—	———	0	—	———	0
				5	5"	—	24	5078K225	0000	—	———	0	—	———	0
				6	6"	—	24	5078K226	0000	—	———	0	—	———	0
				8	8"	—	24	5078K227	0000	—	———	0	—	———	0
				10	10"	—	24	5078K228	00000	—	———	0	—	———	0
				12	12"	—	24	5078K229	00000	—	———	0	—	———	0
				14	14"	—	22	5078K231	00000	—	———	0	—	———	0
				16	16"	—	22	5078K232	00000	—	———	0	—	———	0

Duct Noise Reducers

Muffle noise from high-velocity airflow and fans, blowers, and dust collectors. These reducers are insulated to decrease noise levels in your facility by half.

Galvanized Steel—Strong and corrosion resistant, galvanized steel is the most commonly used ductwork material.

		Overall			Galvanized Steel with Rubber Gasket
Duct Size	OD	Dia.	Lg.	Sound Absorbed	Ga.		Each
4	3 7/8"	8 1/4"	23 5/8"	50%	24	2775K1	0000000
5	4 7/8"	9 1/4"	23 5/8"	50%	24	2775K2	000000
6	5 7/8"	10 5/8"	23 5/8"	50%	24	2775K3	000000
8	7 7/8"	12 3/4"	23 5/8"	50%	24	2775K4	000000
10	9 7/8"	14 3/8"	35 3/8"	50%	24	2775K5	000000
12	12 3/8"	16 3/4"	35 3/8"	50%	24	2775K6	000000

Duct Floor Sweeps

Get dust and debris off your floor and into your collection system. Open the hinged door of these sweeps and push material inside so it can be sucked away.

Galvanized Steel—Strong and corrosion resistant, galvanized steel is the most commonly used ductwork material.

		Overall			Galvanized Steel
Duct Size	ID	Wd.	Ht.	Dp.	Ga.		Each
6	6"	11 1/8"	18 1/4"	6"	18	17345K11	0000000

Quick-Disconnect Duct and Fittings

The fastest ductwork to disassemble for dust collection and other frequently cleaned systems. Join sections with quick-release clamps that open and close with a flip of the latch. Since you don’t need screws, welds, or tools, the installation time is half that of other duct types.

Duct

Pair with compatible fittings and accessories.

Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

				Galvanized Steel		Corrosion-Resistant 304 Stainless Steel
Duct Size	ID	Lg.	Ga.		Each		Each



	3	3 1/16"	59 1/4"	22	1761K104	000000	2538K502	0000000


	4	3 7/8"	59 1/4"	22	1761K12	00000	2538K111	000000
	5	4 7/8"	59 1/4"	22	———	0	2538K112	000000
	6	5 7/8"	59 1/4"	22	———	0	2538K113	000000
	7	6 7/8"	59 1/16"	22	———	0	2538K725	000000
	8	7 7/8"	59 1/16"	22	1761K117	00000	2538K114	000000
	9	8 7/8"	59 1/16"	22	———	0	2538K726	000000
	10	9 7/8"	58 3/4"	22	1761K118	000000	2538K115	000000
	12	12"	58 3/4"	22	1761K119	000000	2538K116	000000
	14	13 15/16"	58 3/4"	20	1761K121	000000	2538K651	000000
	16	15 15/16"	58 3/4"	20	1761K122	000000	2538K652	000000


	18	17 7/8"	58 3/4"	20	1761K651	000000	———	0
	18	17 15/16"	58 3/4"	20	———	0	2538K538	000000
	20	19 7/8"	58 3/4"	20	1761K652	000000	———	0
	20	19 15/16"	58 3/4"	20	———	0	2538K509	000000
	22	21 7/8"	58 3/4"	20	1761K664	000000	———	0
	24	23 7/8"	58 3/4"	20	1761K665	000000	———	0

Adjustment Sleeves

Close gaps between sections of duct without disassembling the whole line. To install these sleeves, cut the end of your duct and place the O-ring on the cut piece. Then, slide the sleeve on and clamp in place.

Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

Duct Adjustment Sleeves								Replacement O-Rings
				Galvanized Steel		Corrosion-Resistant 304 Stainless Steel
Duct Size	ID	Max. Sleeve Extension	Ga.		Each		Each		Each



	3	3 1/8"	7"	22	1761K105	000000	2538K503	000000	1761K371	00000


	4	3 15/16"	7"	22	1761K32	00000	2538K121	00000	1761K324	0000
	5	4 15/16"	7"	22	1761K33	00000	2538K122	00000	1761K335	0000
	6	6"	7"	22	1761K34	00000	2538K123	00000	1761K346	0000
	7	7"	7"	22	1761K629	00000	2538K764	00000	1761K352	0000
	8	8"	7"	22	1761K127	00000	2538K124	00000	1761K347	0000
	9	9"	7"	22	1761K631	00000	2538K765	00000	1761K353	0000
	10	10"	7"	22	1761K128	00000	2538K125	00000	1761K348	0000
	12	12 1/8"	7"	22	1761K129	00000	2538K126	000000	1761K349	0000
	14	14 1/8"	7"	20	1761K123	00000	2538K653	000000	1761K224	0000
	16	16 1/8"	7"	20	1761K124	00000	2538K654	000000	1761K226	0000


	18	18"	7"	20	1761K666	00000	———	0	1761K671	00000
	18	18 1/16"	7"	20	1761K373	00000	———	0	1761K671	00000
	20	20"	7"	20	1761K667	00000	———	0	1761K672	00000
	20	20 1/16"	7"	20	———	0	2538K511	000000	1761K672	00000
	22	22"	7"	20	1761K668	00000	———	0	1761K673	00000
	24	24"	7"	20	1761K669	000000	———	0	1761K674	00000

Duct Airflow Dampers

Turn the lever to adjust airflow.

Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

					Galvanized Steel		Corrosion-Resistant 304 Stainless Steel
	Duct Size	ID	Overall Lg.	Ga.		Each		Each
Standard Airflow Damper



		3	3 3/16"	8"	22	1761K395	000000	———	0


		4	3 15/16"	8"	22	1761K151	00000	2538K671	0000000
		5	4 15/16"	8"	22	———	0	2538K672	000000
		6	6"	8"	22	———	0	2538K673	000000
		7	7"	8"	22	———	0	2538K762	000000
		8	8"	13"	22	1761K154	00000	2538K674	000000
		9	9"	13"	22	———	0	2538K763	000000
		10	10"	13"	22	1761K155	00000	2538K675	000000
		12	12 1/8"	13"	20	1761K156	00000	2538K676	000000
		14	14 1/8"	17"	20	1761K161	000000	2538K677	000000
		16	16 1/8"	17"	20	1761K162	000000	2538K678	000000


		18	18 1/8"	23"	20	1761K396	000000	———	0
		20	20 1/8"	23"	20	1761K397	000000	———	0
		22	22 1/8"	23"	20	1761K398	000000	———	0
		24	24 1/16"	23"	20	1761K399	000000	———	0

Duct Blast Gates

Open and close the slide to control airflow to sections of duct. Blast gates turn flow on or off.

Aluminum with Galvanized Steel Slide—The body is aluminum to reduce stress on your duct and the slide is galvanized steel for strength. Both components resist rust in wet environments.

Corrosion-Resistant 304 Stainless Steel—The most corrosion-resistant metal duct we sell outperforms aluminum in harsh environments. It won’t rust or degrade in systems that exhaust chemical fumes or vent heat from industrial ovens and dryers.

			Overall
	Duct Size	ID	Wd.	Ht.	Dp.		Each
Aluminum with Galvanized Steel Slide



		3	3"	4"	7 1/16"	6 1/4"	1761K663	000000


		4	4"	5"	9 1/2"	5 11/16"	1761K66	00000
		8	8"	9 5/8"	18 1/2"	5 13/16"	1761K257	00000
		10	10"	11 3/8"	21 15/16"	6"	1761K258	000000
		12	12"	13 1/4"	26 13/16"	6 1/16"	1761K259	000000
		14	14"	15 3/4"	29 7/8"	6 1/4"	1761K133	000000
		16	16"	17 7/8"	34 5/8"	6"	1761K134	000000
		18	18"	20 1/4"	40"	9 1/16"	1761K688	000000
		20	20"	22 3/8"	43 1/4"	9 1/4"	1761K689	000000
		22	22"	24 5/8"	45 3/4"	9 1/8"	1761K691	000000
		24	24"	26 5/8"	51"	9 1/8"	1761K692	000000


		Corrosion-Resistant 304 Stainless Steel



				4	4"	6"	11 1/4"	5 7/8"	2538K251	000000


				5	5"	7"	14 1/8"	5 7/8"	2538K252	000000
				6	6"	7 15/16"	16 11/16"	5 5/8"	2538K253	000000
				7	7"	9 3/8"	19 9/16"	5 1/8"	2538K257	000000
				8	8"	10 1/2"	20 1/2"	5 3/4"	2538K254	000000
				9	9"	11 5/8"	22 5/8"	5 1/4"	2538K258	000000
				10	10"	12"	26 5/8"	5 3/4"	2538K255	000000
				12	12"	14 1/2"	31 15/16"	5 7/8"	2538K256	000000
				14	14"	16"	36 7/8"	5 15/16"	2538K659	000000
				16	16"	18"	42 1/8"	5 9/16"	2538K661	000000

Duct Flow Sights

Peek inside duct to monitor airflow and check for buildup and blockages. Sights have a plastic window so you can inspect without opening and disrupting the system.

Galvanized Steel—Strong and corrosion resistant, galvanized steel is the most commonly used ductwork material.

				Galvanized Steel
Duct Size	Overall Lg.	Window Material	Ga.		Each
3	12 1/2"	Acrylic Plastic	22	1761K266	0000000
4	12 1/2"	Acrylic Plastic	22	1761K267	000000
8	12 1/2"	Acrylic Plastic	22	1761K272	000000
10	12 1/2"	Acrylic Plastic	22	1761K274	000000
12	12 1/2"	Acrylic Plastic	22	1761K275	000000
14	12 1/2"	Acrylic Plastic	20	1761K276	000000
16	12 1/2"	Acrylic Plastic	20	1761K277	000000
18	12 1/2"	Acrylic Plastic	20	1761K278	000000

Duct Noise Reducers

Muffle noise from high-velocity airflow and fans, blowers, and dust collectors. These reducers are insulated to cut sound levels in your facility by 25%.

Galvanized Steel—Strong and corrosion resistant, galvanized steel is the most commonly used ductwork material.

		Overall			Galvanized Steel
Duct Size	ID	Dia.	Lg.	Sound Absorbed	Ga.		Each
3	3 1/16"	13 5/8"	28"	25%	20	1761K108	0000000
4	3 7/8"	15 1/8"	28"	25%	20	1761K109	000000
8	7 7/8"	19 1/8"	35"	25%	20	1761K114	00000000
10	9 7/8"	21 1/8"	48"	25%	20	1761K116	00000000
12	12"	23 1/8"	54"	25%	20	1761K261	00000000
14	13 15/16"	25 1/8"	58"	25%	20	1761K262	00000000
16	15 15/16"	27 1/8"	64"	25%	20	1761K263	00000000
18	17 15/16"	30 1/8"	64"	25%	20	1761K264	00000000
20	19 15/16"	32 1/8"	64"	25%	20	1761K265	00000000
22	22"	34 1/8"	64"	25%	20	1761K368	00000000
24	23 15/16"	36 1/8"	64"	25%	20	1761K369	00000000

Duct Spark Traps

Reduce the risk of fire by snuffing out sparks before they get into your dust collection system. These traps slow down and rotate airflow so sparks are extinguished before exiting.

Powder-Coated Steel—The finish adds a layer of protection against corrosion and wear from moisture, heat, and abrasive dust.

	Overall			Powder-Coated Steel
Duct Size	Dia.	Lg.	Ga.		Each
4	10"	40"	22	1761K318	0000000
5	11"	40"	22	1761K319	00000000
6	12"	40"	22	1761K321	00000000
7	13"	44"	22	1761K322	00000000
8	14"	44"	22	1761K323	00000000
9	15"	44"	22	1761K325	00000000
10	16"	44"	22	1761K326	00000000
12	18"	44"	22	1761K327	00000000
14	20"	48"	20	1761K328	00000000
16	22"	48"	20	1761K329	00000000
18	24"	48"	20	1761K331	00000000
20	26"	48"	20	1761K332	00000000

Chemical-Resistant Duct and Fittings

Chemicals can eat away at most metal duct, but not this PVC system. It’s often used to exhaust corrosive gases, vapors, and fumes. Components press-fit together and secure with PVC pipe cement.

Duct

Pair with compatible fittings and accessories.

To start a run of duct, mount a flange to equipment. Flanges also create a secure joint between sections of duct—attach a flange to each piece. Also known as angle rings.

	Duct							Duct Flanges
				5 ft. Long		10 ft. Long
	Duct Size	OD	Color		Each		Each		Each
PVC



		4	4 1/2"	Gray	2051K67	000000	2051K186	0000000	5124K9	000000


		6	6 5/8"	Gray	2051K61	000000	2051K11	000000	5124K19	00000
		8	8 5/8"	Gray	2051K62	000000	2051K31	000000	5124K39	00000
		10	10 3/4"	Gray	2051K63	000000	2051K51	000000	5124K59	000000
		12	12 3/4"	Gray	2051K64	000000	2051K71	000000	5124K79	000000
		14	14"	Gray	2051K65	000000	2051K91	000000	5124K99	000000

Straight Connectors

Join two lengths of duct.

			PVC
Duct Size	ID	Color		Each



	4	4 1/2"	Gray	2051K357	000000


	6	6 5/8"	Gray	2051K15	00000
	8	8 5/8"	Gray	2051K35	00000
	10	10 3/4"	Gray	2051K55	00000
	12	12 3/4"	Gray	2051K75	00000
	14	14"	Gray	2051K95	00000

Duct Airflow Dampers

Turn the lever to adjust airflow.

					PVC
	Duct Size	ID	Overall Lg.	Color		Each
Standard Airflow Damper







				Female

				4	4 1/2"	7 1/2"	Gray	2051K165	0000000


				6	6 5/8"	8 1/4"	Gray	2051K16	000000
				8	8 5/8"	10 1/2"	Gray	2051K36	000000
				10	10 3/4"	13"	Gray	2051K56	000000
				12	12 3/4"	14 1/2"	Gray	2051K76	000000

Duct Blast Gates

Open and close the slide to control airflow to sections of duct. Blast gates turn flow on or off.

			Overall
	Duct Size	ID	Wd.	Ht.	Dp.	Color		Each
PVC



		4	4 1/2"	7 1/2"	14"	5"	Gray	3445K7	0000000


		6	6 5/8"	9 5/8"	17"	6 3/8"	Gray	3445K17	000000
		8	8 5/8"	11 5/8"	20 3/4"	6 3/8"	Gray	3445K37	000000
		10	10 3/4"	13 3/4"	24"	6 3/8"	Gray	3445K57	000000
		12	12 3/4"	15 3/4"	26 3/4"	6 3/8"	Gray	3445K77	000000

Tight-Seal Spiral Duct and Fittings

Gasketed fittings prevent leaks between connections without the need for tape or other sealants. Duct has a continuous seam that reinforces it for strength and long life. The rigid construction keeps its shape, even against suction from dust collectors. Duct is smooth on the inside for efficient airflow. Because of its attractive look, spiral duct is often used for exposed heating and cooling systems.

Straight Collars

Link rectangular duct systems to equipment that uses round duct. Cut a hole, install the collar, and connect a piece of round duct.

Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

Polyethylene Foam Gasket—The flange has an adhesive-backed gasket to bond the connection until you fasten with screws. The gasket also prevents leaks.

			Galvanized Steel with EPDM Gasket
Duct Size	OD	Bottom Gasket Material	Ga.		Each
4	3 7/8"	Polyethylene Foam	24	5078K11	000000
5	4 7/8"	Polyethylene Foam	24	5078K12	00000
6	5 7/8"	Polyethylene Foam	24	5078K111	00000
8	7 7/8"	Polyethylene Foam	24	5078K112	00000
10	9 7/8"	Polyethylene Foam	24	5078K113	00000
12	11 7/8"	Polyethylene Foam	24	5078K114	00000
14	13 7/8"	Polyethylene Foam	24	5078K115	00000
16	15 7/8"	Polyethylene Foam	24	5078K116	00000