Duct Wyes | McMaster-Carr

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133 Products

About Duct Connections

A spiral seam makes this duct strong and rigid. Fittings have male ends with a slightly smaller diameter to press-fit into duct.

Galvanized steel has good corrosion resistance. PVC-coated steel combines the strength of steel with the corrosion resistance of plastic. 304 stainless steel is more corrosion resistant than steel.

45° Wye Connectors

Wye connectors join or split runs of duct.

				Galvanized Steel		PVC-Coated Steel		304 Stainless Steel
Duct Size	Male OD	Gauge	End Construction		Each		Each		Each
3	2 7/8"	24	Plain	00000000	0000000	000000	00	00000000	0000000
4	3 7/8"	24	Plain	00000000	000000	000000	00	00000000	000000
5	4 7/8"	24	Plain	00000000	000000	000000	00	00000000	000000
6	5 7/8"	24	Plain	00000000	00000	00000000	0000000	00000000	000000
7	6 7/8"	24	Plain	00000000	00000	000000	00	00000000	000000
8	7 7/8"	24	Plain	00000000	00000	00000000	000000	00000000	000000
9	8 7/8"	24	Plain	00000000	000000	000000	00	00000000	000000
10	9 7/8"	24	Plain	00000000	000000	00000000	000000	00000000	000000
12	11 7/8"	24	Plain	00000000	000000	000000	00	00000000	000000
14	13 7/8"	24	Plain	00000000	000000	000000	00	00000000	000000
16	15 7/8"	24	Plain	00000000	000000	000000	00	00000000	000000
18	17 7/8"	24	Plain	00000000	000000	000000	00	00000000	000000
20	19 7/8"	24	Plain	00000000	000000	000000	00	00000000	000000
22	21 7/8"	24	Plain	00000000	000000	000000	00	000000	00
24	23 7/8"	24	Plain	00000000	000000	000000	00	000000	00

45° Wye Reducers

Reducers connect duct with different diameters.

Duct Size			Male OD					PVC-Coated Steel
(A)	(B)	(C)	(A)	(B)	(C)	Gauge	End Construction		Each
6	4	6	5 7/8"	3 7/8"	5 7/8"	24	Plain	00000000	000000
8	6	8	7 7/8"	5 7/8"	7 7/8"	24	Plain	00000000	000000
10	8	10	9 7/8"	7 7/8"	9 7/8"	24	Plain	00000000	000000
12	10	12	11 7/8"	9 7/8"	11 7/8"	24	Plain	00000000	000000

Quick-Disconnect Duct and Fittings

Join duct and fittings with quick-release clamps for faster disassembly and cleanout than other duct systems.

Galvanized steel has good corrosion resistance. 304 stainless steel is the most corrosion resistant.

90° Wye Connectors

Wye connectors join or split runs of duct.

				Galvanized Steel		304 Stainless Steel
Duct Size	ID	Gauge	End Construction		Each		Each
3	3 1/16"	22	Rolled	00000000	0000000	000000	00
4	3 7/8"	22	Rolled	00000000	000000	00000000	0000000
5	4 7/8"	22	Rolled	00000000	000000	00000000	000000
6	5 7/8"	22	Rolled	00000000	000000	00000000	000000
7	6 7/8"	22	Rolled	00000000	000000	00000000	000000
8	7 7/8"	22	Rolled	00000000	000000	00000000	000000
9	8 7/8"	22	Rolled	00000000	000000	00000000	000000
10	9 7/8"	22	Rolled	00000000	000000	00000000	000000
12	12"	22	Rolled	00000000	000000	00000000	000000
14	13 15/16"	20	Rolled	00000000	000000	00000000	000000
16	16"	20	Rolled	00000000	000000	00000000	000000
18	17 15/16"	20	Rolled	00000000	000000	000000	00
20	19 15/16"	20	Rolled	00000000	000000	000000	00
22	22"	20	Rolled	00000000	000000	000000	00
24	23 15/16"	20	Rolled	00000000	000000	000000	00

45° Wye Connectors

Wye connectors join or split runs of duct.

				Galvanized Steel		304 Stainless Steel
Duct Size	ID	Gauge	End Construction		Each		Each
3	3 1/16"	22	Rolled	00000000	0000000	000000	00
4	3 7/8"	22	Rolled	00000000	000000	00000000	0000000
5	4 7/8"	22	Rolled	00000000	000000	00000000	000000
6	5 7/8"	22	Rolled	00000000	000000	00000000	000000
7	6 7/8"	22	Rolled	00000000	000000	00000000	000000
8	7 7/8"	22	Rolled	00000000	000000	00000000	000000
9	8 7/8"	22	Rolled	00000000	000000	00000000	000000
10	9 7/8"	22	Rolled	00000000	000000	00000000	000000
12	12"	22	Rolled	00000000	000000	00000000	000000
14	13 15/16"	20	Rolled	00000000	000000	00000000	000000
16	16"	20	Rolled	00000000	000000	00000000	000000
18	17 7/8"	20	Rolled	00000000	000000	000000	00
20	19 7/8"	20	Rolled	00000000	000000	000000	00
22	21 7/8"	20	Rolled	00000000	000000	000000	00
24	23 7/8"	20	Rolled	00000000	000000	000000	00

30° Wye Saddles

Saddles add a branch to an existing run of duct. Cut a hole in the duct and fit the saddle over the hole.

Duct Size					Galvanized Steel		304 Stainless Steel
(A)	(B)	ID	Gauge	End Construction		Each		Each
3	4	3 1/16"	22	Rolled	00000000	000000	000000	00
4	5	3 7/8"	22	Rolled	00000000	00000	000000	00
5	6	4 7/8"	22	Rolled	00000000	00000	000000	00
6	6	5 7/8"	22	Rolled	0000000	00000	00000000	0000000
6	7	5 7/8"	22	Rolled	00000000	00000	000000	00
6	8	5 7/8"	22	Rolled	0000000	000000	00000000	000000
6	10	5 7/8"	22	Rolled	0000000	000000	00000000	000000
6	12	5 7/8"	22	Rolled	00000000	000000	00000000	000000
7	8	6 7/8"	22	Rolled	00000000	00000	000000	00
8	9	7 7/8"	22	Rolled	00000000	000000	000000	00
9	10	8 7/8"	22	Rolled	00000000	000000	000000	00
10	12	9 7/8"	22	Rolled	00000000	000000	000000	00
12	14	12"	20	Rolled	00000000	000000	000000	00
14	16	13 15/16"	20	Rolled	00000000	000000	000000	00
16	18	16"	20	Rolled	00000000	000000	000000	00
18	20	17 15/16"	20	Rolled	00000000	000000	000000	00
20	22	19 15/16"	20	Rolled	00000000	000000	000000	00
22	24	22"	20	Rolled	00000000	000000	000000	00

Standard Duct and Fittings

No need for clamps or connectors—duct and fittings press-fit together. Male ends are crimped or tapered, making them slightly smaller than a female end for simple assembly.

Galvanized steel has good corrosion resistance.

45° Wye Reducers

Female × Male × Male

Male × Female × Female

Reducers connect duct with different diameters.

Duct Size			Female ID			Male OD					Galvanized Steel
(A)	(B)	(C)	(A)	(B)	(C)	(A)	(B)	(C)	Gauge	End Construction		Each
Female × Male × Male
12	10	10	12"	__	__	__	9 7/8"	9 7/8"	28	Crimped	00000000	0000000
14	10	10	14"	__	__	__	9 7/8"	9 7/8"	28	Crimped	00000000	000000
16	12	12	16"	__	__	__	11 7/8"	11 7/8"	26	Crimped	00000000	000000
16	14	14	16"	__	__	__	13 7/8"	13 7/8"	26	Crimped	00000000	000000
Male × Female × Female
4	3	3	__	3"	3"	3 7/8"	__	__	26	Crimped	00000000	00000
5	3	4	__	3"	4"	4 7/8"	__	__	26	Crimped	00000000	00000
5	3	5	__	3"	5"	4 7/8"	__	__	26	Crimped	00000000	00000
6	3	4	__	3"	4"	5 7/8"	__	__	26	Crimped	00000000	00000
6	4	4	__	4"	4"	5 7/8"	__	__	26	Crimped	00000000	00000
6	4	5	__	4"	5"	5 7/8"	__	__	26	Crimped	00000000	00000
7	5	6	__	5"	6"	6 7/8"	__	__	26	Crimped	00000000	00000
8	6	6	__	6"	6"	7 7/8"	__	__	26	Crimped	00000000	00000
10	8	8	__	8"	8"	9 7/8"	__	__	26	Crimped	00000000	000000
12	8	8	__	8"	8"	11 7/8"	__	__	26	Crimped	00000000	000000

Chemical-Resistant Duct and Fittings

Made of PVC plastic to withstand acids, alkalies, salts, and other corrosive vapors and fumes. Use PVC pipe cement (not included) to secure components. Fittings have female ends with a slightly larger diameter to press-fit over duct.

45° Wye Saddles

Saddles add a branch to an existing run of duct. Cut a hole in the duct and fit the saddle over the hole.

Duct Size				PVC Plastic
(A)	(B)	Female ID	Color		Each
6	8	6 5/8"	Gray	00000000	0000000
8	10	8 5/8"	Gray	00000000	000000
10	12	10 3/4"	Gray	00000000	000000
12	14	12 3/4"	Gray	00000000	000000

Duct Hose Connectors

Slide these connectors into the ends of duct hose and secure with a clamp.

Galvanized steel has fair corrosion resistance.

Wyes

Galvanized Steel
For Hose ID	Lg.	Shape	Temperature Range, ° F	Material Thick.		Each
3"	4"	Wye	-100° to 550°	0.012"	0000000	000000
4"	4"	Wye	-100° to 550°	0.012"	0000000	00000
5"	4"	Wye	-100° to 550°	0.012"	0000000	00000
6"	4"	Wye	-100° to 550°	0.012"	0000000	00000
7"	4"	Wye	-100° to 550°	0.012"	0000000	00000
8"	4"	Wye	-100° to 550°	0.012"	0000000	00000
10"	4"	Wye	-100° to 550°	0.012"	0000000	000000
12"	4"	Wye	-100° to 550°	0.012"	0000000	000000

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About Duct Connections

Crush-Resistant Spiral Duct and Fittings

Quick-Disconnect Duct and Fittings

Standard Duct and Fittings

Chemical-Resistant Duct and Fittings

Duct Hose Connectors