Stainless Steel Duct Reducers

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Stainless Steel

304 Stainless Steel

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Reducer

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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	0000000	000000


		6	4	6"	3 7/8"	26	0000000	00000
		8	4	8"	3 7/8"	26	0000000	00000
		8	6	8"	5 7/8"	26	0000000	00000
		12	8	12"	7 7/8"	24	00000000	000000
		14	10	14"	9 7/8"	24	00000000	000000
		16	12	16"	11 7/8"	24	00000000	000000
		18	14	18"	13 7/8"	24	00000000	000000
		20	16	20"	15 7/8"	24	00000000	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	00000000	0000000


	5	4	4 7/8"	3 7/8"	22	00000000	000000
	6	4	5 7/8"	3 7/8"	22	00000000	000000
	6	5	5 7/8"	4 7/8"	22	00000000	000000
	8	6	7 7/8"	5 7/8"	22	00000000	000000
	10	6	9 7/8"	5 7/8"	22	0000000	000000
	10	8	9 7/8"	7 7/8"	22	00000000	000000
	12	8	12"	7 7/8"	22	00000000	000000
	12	10	12"	9 7/8"	22	00000000	000000
	14	12	13 15/16"	12"	22	00000000	000000
	16	14	16"	14"	20	00000000	000000


	18	16	17 15/16"	16"	20	00000000	000000
	20	18	19 15/16"	17 15/16"	20	00000000	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	00000000	000000
5	4	4 7/8"	3 7/8"	24	00000000	00000
6	4	5 7/8"	3 7/8"	20	0000000	00000
6	5	5 7/8"	4 7/8"	24	00000000	00000
7	6	6 7/8"	5 7/8"	24	00000000	00000
8	6	7 7/8"	5 7/8"	20	0000000	000000
8	7	7 7/8"	6 7/8"	24	00000000	000000
9	8	8 7/8"	7 7/8"	24	00000000	000000
10	6	9 7/8"	5 7/8"	20	0000000	000000
10	8	9 7/8"	7 7/8"	20	0000000	000000
12	10	11 7/8"	9 7/8"	24	00000000	000000
14	12	13 7/8"	11 7/8"	24	00000000	000000
16	14	15 7/8"	13 7/8"	24	00000000	000000
18	16	17 7/8"	15 7/8"	24	00000000	000000
20	18	19 7/8"	17 7/8"	24	00000000	000000