PVC Duct Connectors | McMaster-Carr

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97 Products

Duct Flanges


With Mounting Holes	With 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.

PVC—Withstand chemicals that would eat away at most metal duct. It’s often used in systems that exhaust corrosive gases, vapors, and fumes.

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







				PVC

				4	4 1/2"	2 1/4"	1 7/8"	1/4"	No	4	5/16"	000000	000000


				6	6 5/8"	3 1/4"	1 1/2"	1/4"	No	8	5/16"	0000000	00000
				8	8 5/8"	3 1/4"	1 1/2"	1/4"	No	10	5/16"	0000000	00000
				10	10 3/4"	3 1/4"	1 3/8"	1/4"	No	12	5/16"	0000000	000000
				12	12 3/4"	3 1/2"	1 3/8"	1/4"	No	16	5/16"	0000000	000000
				14	14"	3 1/2"	1 3/4"	1/4"	No	16	5/16"	0000000	000000
				16	16"	3 1/2"	1 3/4"	1/4"	No	18	5/16"	0000000	000000

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.

90° Elbow Connectors

Change the direction of airflow when joining lengths of duct.

			PVC
Duct Size	ID	Color		Each



	4	4 1/2"	Gray	0000000	000000


	6	6 5/8"	Gray	0000000	000000
	8	8 5/8"	Gray	0000000	000000
	10	10 3/4"	Gray	0000000	000000
	12	12 3/4"	Gray	0000000	000000
	14	14"	Gray	0000000	000000

45° Elbow Connectors

Change the direction of airflow when joining lengths of duct.

			PVC
Duct Size	ID	Color		Each



	4	4 1/2"	Gray	00000000	000000


	6	6 5/8"	Gray	0000000	000000
	8	8 5/8"	Gray	0000000	000000
	10	10 3/4"	Gray	0000000	000000
	12	12 3/4"	Gray	0000000	000000
	14	14"	Gray	0000000	000000

Straight Connectors

Join two lengths of duct.

			PVC
Duct Size	ID	Color		Each



	4	4 1/2"	Gray	00000000	000000


	6	6 5/8"	Gray	0000000	00000
	8	8 5/8"	Gray	0000000	00000
	10	10 3/4"	Gray	0000000	00000
	12	12 3/4"	Gray	0000000	00000
	14	14"	Gray	0000000	00000

Tee Connectors

Split or merge airflow paths.

			PVC
Duct Size	ID	Color		Each



	4	4 1/2"	Gray	00000000	000000


	6	6 5/8"	Gray	00000000	000000
	8	8 5/8"	Gray	00000000	000000
	10	10 3/4"	Gray	00000000	000000
	12	12 3/4"	Gray	00000000	000000
	14	14"	Gray	00000000	000000

Straight Reducers

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

Duct Size		ID			PVC
(A)	(B)	(A)	(B)	Color		Each



	6	4	6 5/8"	4 1/2"	Gray	0000000	0000000


	8	6	8 5/8"	6 5/8"	Gray	0000000	000000
	10	8	10 3/4"	8 5/8"	Gray	0000000	000000
	12	8	12 3/4"	8 5/8"	Gray	00000000	000000
	12	10	12 3/4"	10 3/4"	Gray	0000000	000000
	14	10	14"	10 3/4"	Gray	00000000	000000
	14	12	14"	12 3/4"	Gray	0000000	000000

45° Wye Saddles

A more gradual change of direction than tees, wye saddles add onto existing ductwork without disassembling it. Cut a hole in your duct and then install the saddle over the opening.

Duct Size				PVC
(A)	(B)	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

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.

90° Elbow Connectors

Change the direction of airflow when joining lengths of duct.

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.

		Chemical-Resistant PVC-Coated Steel
Duct Size	OD	Ga.		Each
4	3 7/8"	24	00000000	000000
5	4 7/8"	24	00000000	000000
6	5 7/8"	24	00000000	000000
7	6 7/8"	24	00000000	000000
8	7 7/8"	24	00000000	000000
9	8 7/8"	24	00000000	000000
10	9 7/8"	24	00000000	000000
12	11 7/8"	24	00000000	000000

45° Elbow Connectors

Change the direction of airflow when joining lengths of duct.

		Chemical-Resistant PVC-Coated Steel
Duct Size	OD	Ga.		Each
4	3 7/8"	24	00000000	000000
5	4 7/8"	24	00000000	00000
6	5 7/8"	24	00000000	00000
7	6 7/8"	24	00000000	00000
8	7 7/8"	24	00000000	00000
9	8 7/8"	24	00000000	000000
10	9 7/8"	24	00000000	000000
12	11 7/8"	24	00000000	000000

Straight Connectors

Join two lengths of duct.

			Chemical-Resistant PVC-Coated Steel
	Duct Size	OD	Ga.		Each
Male



		4	3 7/8"	26	00000000	000000


		5	4 7/8"	26	00000000	00000
		6	5 7/8"	26	00000000	00000
		7	6 7/8"	26	00000000	00000
		8	7 7/8"	26	00000000	00000
		9	8 7/8"	26	00000000	00000
		10	9 7/8"	26	00000000	00000
		12	11 7/8"	26	00000000	00000

Tee Connectors

Split or merge airflow paths.

		Chemical-Resistant PVC-Coated Steel
Duct Size	OD	Ga.		Each
4	3 7/8"	24	00000000	000000
6	5 7/8"	24	00000000	00000
8	7 7/8"	24	00000000	000000
10	9 7/8"	24	00000000	000000
12	11 7/8"	24	00000000	000000

45° Wye Connectors

Split or merge airflow more gradually than tees. With less abrupt changes in direction, wyes reduce turbulence for smoother flow.

		Chemical-Resistant PVC-Coated Steel
Duct Size	OD	Ga.		Each
6	5 7/8"	24	00000000	0000000
8	7 7/8"	24	00000000	000000
10	9 7/8"	24	00000000	000000

Straight Reducers

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

Duct Size		OD		Chemical-Resistant PVC-Coated Steel
(A)	(B)	(A)	(B)	Ga.		Each
5	4	4 7/8"	3 7/8"	20	00000000	000000
6	4	5 7/8"	3 7/8"	20	00000000	00000
6	5	5 7/8"	4 7/8"	20	00000000	00000
7	6	6 7/8"	5 7/8"	20	00000000	00000
8	6	7 7/8"	5 7/8"	20	00000000	00000
8	7	7 7/8"	6 7/8"	20	00000000	00000
9	8	8 7/8"	7 7/8"	20	00000000	00000
10	8	9 7/8"	7 7/8"	20	00000000	000000
10	9	9 7/8"	8 7/8"	20	00000000	000000
12	10	11 7/8"	9 7/8"	20	00000000	000000

Tee Reducers

Connect duct of different diameters to split or merge airflow.

Duct Size			OD			Chemical-Resistant PVC-Coated Steel
(A)	(B)	(C)	(A)	(B)	(C)	Ga.		Each
6	4	6	5 7/8"	3 7/8"	5 7/8"	24	00000000	000000
8	6	8	7 7/8"	5 7/8"	7 7/8"	24	00000000	000000
10	8	10	9 7/8"	7 7/8"	9 7/8"	24	00000000	000000
12	8	12	11 7/8"	7 7/8"	11 7/8"	24	00000000	000000

45° Wye Reducers

Connect duct of different diameters to split or merge airflow more gradually than tees. With less abrupt changes in direction, wyes reduce turbulence for smoother flow.

Duct Size			OD			Chemical-Resistant PVC-Coated Steel
(A)	(B)	(C)	(A)	(B)	(C)	Ga.		Each
6	4	6	5 7/8"	3 7/8"	5 7/8"	24	00000000	000000
8	6	8	7 7/8"	5 7/8"	7 7/8"	24	00000000	000000
10	8	10	9 7/8"	7 7/8"	9 7/8"	24	00000000	000000
12	10	12	11 7/8"	9 7/8"	11 7/8"	24	00000000	000000

Airflow Dampers for Chemical-Resistant Duct

Turn the lever on these dampers to regulate airflow in PVC duct. They withstand chemicals that would break down most metal components. Secure to duct with PVC pipe cement (not included).

				PVC
Duct Size	ID	Overall Lg.	Color		Each
4	4 1/2"	7 1/2"	Gray	00000000	0000000
6	6 5/8"	8 1/4"	Gray	0000000	000000
8	8 5/8"	10 1/2"	Gray	0000000	000000
10	10 3/4"	13"	Gray	0000000	000000
12	12 3/4"	14 1/2"	Gray	0000000	000000