Stainless Steel Duct Reducers

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Stainless Steel

304 Stainless Steel

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Reducer

Duct Size

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Quick-Disconnect Clamp

Duct Type

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Performance

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

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Export Control Classification Number (ECCN)

37 Products

Duct Type

Standard

Our basic duct for a range of HVAC applications

9 products

Clamp Together

The fastest ductwork to install and disassemble

13 products

Duct Type

Spiral

A continuous seam reinforces duct for strength and long life

15 products

Performance

Quick Disconnect

Disassemble quickly for frequent cleanouts

13 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.

Straight Reducers

Female × Male

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

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.

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



		4	3	4"	2 7/8"	26	1767K81	000000


		6	4	6"	3 7/8"	26	1767K82	00000
		8	4	8"	3 7/8"	26	1767K83	00000
		8	6	8"	5 7/8"	26	1767K84	00000
		12	8	12"	7 7/8"	24	1767K313	000000
		14	10	14"	9 7/8"	24	1767K314	000000
		16	12	16"	11 7/8"	24	1767K315	000000
		18	14	18"	13 7/8"	24	1767K316	000000
		20	16	20"	15 7/8"	24	1767K317	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 Reducers

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

Duct Size		ID			Corrosion-Resistant 304 Stainless Steel
(A)	(B)	(A)	(B)	Ga.		Each



	4	3	3 7/8"	3 1/16"	22	2538K507	0000000


	5	4	4 7/8"	3 7/8"	22	2538K706	000000
	6	4	5 7/8"	3 7/8"	22	2538K241	000000
	6	5	5 7/8"	4 7/8"	22	2538K242	000000
	8	6	7 7/8"	5 7/8"	22	2538K709	000000
	10	6	9 7/8"	5 7/8"	22	2538K71	000000
	10	8	9 7/8"	7 7/8"	22	2538K711	000000
	12	8	12"	7 7/8"	22	2538K712	000000
	12	10	12"	9 7/8"	22	2538K713	000000
	14	12	13 15/16"	12"	22	2538K714	000000
	16	14	16"	14"	20	2538K715	000000


	18	16	17 15/16"	16"	20	2538K522	000000
	20	18	19 15/16"	17 15/16"	20	2538K523	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.

Straight Reducers

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

Duct Size		OD		Corrosion-Resistant 304 Stainless Steel
(A)	(B)	(A)	(B)	Ga.		Each
4	3	3 7/8"	2 7/8"	24	2561K125	000000
5	4	4 7/8"	3 7/8"	24	2561K126	00000
6	4	5 7/8"	3 7/8"	20	2561K28	00000
6	5	5 7/8"	4 7/8"	24	2561K127	00000
7	6	6 7/8"	5 7/8"	24	2561K128	00000
8	6	7 7/8"	5 7/8"	20	2561K29	000000
8	7	7 7/8"	6 7/8"	24	2561K129	000000
9	8	8 7/8"	7 7/8"	24	2561K131	000000
10	6	9 7/8"	5 7/8"	20	2561K31	000000
10	8	9 7/8"	7 7/8"	20	2561K32	000000
12	10	11 7/8"	9 7/8"	24	2561K132	000000
14	12	13 7/8"	11 7/8"	24	2561K133	000000
16	14	15 7/8"	13 7/8"	24	2561K134	000000
18	16	17 7/8"	15 7/8"	24	2561K135	000000
20	18	19 7/8"	17 7/8"	24	2561K136	000000