Stainless Steel Duct Flanges

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Material

Duct Size

Flange Mount Type

Component

Fitting Connection

Quick-Disconnect Clamp

Number of Mounting Holes

With Mounting Holes

Overall Depth

Performance

Flange Thickness

Gender

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Flange Height

REACH

RoHS

Mounting Hole Diameter

9/32"

3/8"

7/16"

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

Exempt

Gauge

Depth

Duct Type

62 Products

Component

Adapter

Bridge the gap between different types and shapes of duct

13 products

Flange

Mount to air handlers and HVAC equipment to start a run of duct

49 products

Duct Type

Clamp Together

The fastest ductwork to install and disassemble

13 products

Performance

Quick Disconnect

Disassemble quickly for frequent cleanouts

13 products

Duct Flanges


With Mounting Holes	With Mounting Holes	Without Mounting Holes	Without Mounting Holes

Mount flanges to air handlers and HVAC equipment to start a run of duct. They also create a secure joint between sections of duct—attach a flange to each piece. Also known as angle rings.

With Mounting Holes—Ready to install, these flanges secure with screws.

Without Mounting Holes—Drill your own holes or weld into place.

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.

				Flange		Mounting
	Duct Size	ID	Overall Dp.	Ht.	Thk.	Fasteners Included	No. of Holes	Hole Dia.		Each
With Mounting Holes







				Corrosion-Resistant 304 Stainless Steel

				3	3 1/16"	7/8"	1"	1/8"	No	6	9/32"	1734K11	000000


				3 1/2	3 9/16"	1"	1"	9/64"	No	6	9/32"	1734K111	00000
				4	4 1/16"	1"	1"	1/8"	No	6	9/32"	1734K83	00000
				4 1/2	4 9/16"	1"	1"	9/64"	No	6	9/32"	1734K112	00000
				5	5 1/16"	1"	1"	1/8"	No	6	9/32"	1734K53	00000
				5 1/2	5 9/16"	1"	1"	9/64"	No	6	9/32"	1734K113	00000
				6	6 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	1734K54	00000
				7	7 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	1734K55	00000
				8	8 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	1734K26	00000
				9	9 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	1734K28	00000
				10	10 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	1734K31	00000


				11	11 1/8"	1 1/4"	1 1/4"	1/8"	No	6	3/8"	1734K33	00000
				12	12 1/8"	1 1/2"	1 1/2"	1/8"	No	8	7/16"	1734K35	00000
				13	13 1/8"	1 1/2"	1 1/2"	1/8"	No	8	7/16"	1734K37	00000
				14	14 1/8"	1 1/2"	1 1/2"	1/8"	No	8	7/16"	1734K39	00000
				15	15 1/8"	1 1/2"	1 1/2"	1/8"	No	8	7/16"	1734K42	00000
				16	16 1/8"	1 1/2"	1 1/2"	3/16"	No	8	7/16"	1734K43	000000
				18	18 1/8"	1 1/2"	1 1/2"	3/16"	No	8	7/16"	1734K44	000000
				19	19 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	1734K115	000000
				20	20 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	1734K45	000000
				22	22 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	1734K46	000000


				24	24 1/8"	1 1/2"	1 1/2"	3/16"	No	12	7/16"	1734K47	000000
				26	26 1/8"	2"	2"	3/16"	No	16	7/16"	1734K48	000000
				28	28 1/8"	2"	2"	3/16"	No	16	7/16"	1734K49	000000
				30	30 1/8"	2"	2"	3/16"	No	16	7/16"	1734K82	000000
				32	32 1/8"	2"	2"	3/16"	No	16	7/16"	1734K123	000000
				36	36 1/8"	2"	2"	3/16"	No	16	7/16"	1734K127	000000
				38	38 1/8"	2"	2"	3/16"	No	24	7/16"	1734K129	000000
				40	40 1/8"	2"	2"	3/16"	No	24	7/16"	1734K132	000000


				Without Mounting Holes







								Corrosion-Resistant 304 Stainless Steel

								4	4 1/16"	1"	1"	1/8"	—	—	—	1734K12	00000


								5	5 1/16"	1"	1"	1/8"	—	—	—	1734K13	00000
								6	6 1/8"	1 1/4"	1 1/4"	1/8"	—	—	—	1734K14	00000
								7	7 1/8"	1 1/4"	1 1/4"	1/8"	—	—	—	1734K15	00000
								8	8 1/8"	1 1/4"	1 1/4"	1/8"	—	—	—	1734K16	00000
								9	9 1/8"	1 1/4"	1 1/4"	1/8"	—	—	—	1734K17	00000
10								10 1/8"	1 1/4"	1 1/4"	1/8"	—	—	—	1734K18	00000
11	11 1/8"							1 1/4"	1 1/4"	1/8"	—	—	—	1734K19	00000
12	12 1/8"							1 1/2"	1 1/2"	1/8"	—	—	—	1734K21	00000
13	13 1/8"							1 1/2"	1 1/2"	1/8"	—	—	—	1734K22	00000
14	14 1/8"							1 1/2"	1 1/2"	1/8"	—	—	—	1734K23	00000


15	15 1/8"	1 1/2"	1 1/2"					1/8"	—	—	—	1734K24	00000
16	16 1/8"	1 1/2"	1 1/2"					3/16"	—	—	—	1734K25	000000
18	18 1/8"	1 1/2"	1 1/2"					3/16"	—	—	—	1734K27	000000
20	20 1/8"	1 1/2"	1 1/2"					3/16"	—	—	—	1734K29	000000
22	22 1/8"	1 1/2"	1 1/2"					3/16"	—	—	—	1734K32	000000
24	24 1/8"	1 1/2"	1 1/2"					3/16"	—	—	—	1734K34	000000
26	26 1/8"	2"	2"					3/16"	—	—	—	1734K36	000000
28	28 1/8"	2"	2"					3/16"	—	—	—	1734K38	000000
30	30 1/8"	2"	2"					3/16"	—	—	—	1734K41	000000

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.

Straight Adapters

Duct-to-Duct

Flanged

Adapter

Bridge the gap between quick disconnect and other types of duct. These adapters mate with standard and spiral round duct, flanged duct fittings, or duct hose.

Duct-to-Duct Flanged Adapter—The flange joins quick-disconnect duct to fittings that have a flanged connection.

				Corrosion-Resistant 304 Stainless Steel
	Duct Size	ID	Ga.		Each
Duct-to-Duct Flanged Adapter



		3	3 1/16"	22	2538K527	0000000


		4	3 7/8"	22	2538K181	000000
		5	4 7/8"	22	2538K182	000000
		6	5 7/8"	22	2538K183	000000
		7	6 7/8"	22	2538K771	000000
		8	7 7/8"	22	2538K184	000000
		9	8 7/8"	22	2538K772	000000
		10	9 7/8"	22	2538K185	000000
		12	12"	22	2538K186	000000
		14	13 15/16"	20	2538K666	000000
		16	15 15/16"	20	2538K667	000000


		18	17 15/16"	20	2538K528	000000
		20	19 15/16"	20	2538K529	000000