PVC Plastic Duct Fittings

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With Mounting Holes

81 Products

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.

Duct

Pair with compatible fittings and accessories.

To start a run of duct, mount a flange to equipment. Flanges also create a secure joint between sections of duct—attach a flange to each piece. Also known as angle rings.

	Duct							Duct Flanges
				5 ft. Long		10 ft. Long
	Duct Size	OD	Color		Each		Each		Each
PVC



		4	4 1/2"	Gray	2051K67	000000	2051K186	0000000	5124K9	000000


		6	6 5/8"	Gray	2051K61	000000	2051K11	000000	5124K19	00000
		8	8 5/8"	Gray	2051K62	000000	2051K31	000000	5124K39	00000
		10	10 3/4"	Gray	2051K63	000000	2051K51	000000	5124K59	00000
		12	12 3/4"	Gray	2051K64	000000	2051K71	000000	5124K79	000000
		14	14"	Gray	2051K65	000000	2051K91	000000	5124K99	000000

90° Elbow Connectors

Change the direction of airflow when joining lengths of duct.

			PVC
Duct Size	ID	Color		Each



	4	4 1/2"	Gray	2051K27	000000


	6	6 5/8"	Gray	2051K12	000000
	8	8 5/8"	Gray	2051K32	000000
	10	10 3/4"	Gray	2051K52	000000
	12	12 3/4"	Gray	2051K72	000000
	14	14"	Gray	2051K92	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	2051K145	000000


	6	6 5/8"	Gray	2051K14	000000
	8	8 5/8"	Gray	2051K34	000000
	10	10 3/4"	Gray	2051K54	000000
	12	12 3/4"	Gray	2051K74	000000
	14	14"	Gray	2051K94	000000

Straight Connectors

Join two lengths of duct.

			PVC
Duct Size	ID	Color		Each



	4	4 1/2"	Gray	2051K357	000000


	6	6 5/8"	Gray	2051K15	00000
	8	8 5/8"	Gray	2051K35	00000
	10	10 3/4"	Gray	2051K55	00000
	12	12 3/4"	Gray	2051K75	00000
	14	14"	Gray	2051K95	00000

Tee Connectors

Split or merge airflow paths.

			PVC
Duct Size	ID	Color		Each



	4	4 1/2"	Gray	2051K281	000000


	6	6 5/8"	Gray	2051K282	000000
	8	8 5/8"	Gray	2051K283	000000
	10	10 3/4"	Gray	2051K284	000000
	12	12 3/4"	Gray	2051K285	000000
	14	14"	Gray	2051K286	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	2051K21	0000000


	8	6	8 5/8"	6 5/8"	Gray	2051K22	000000
	10	8	10 3/4"	8 5/8"	Gray	2051K23	000000
	12	8	12 3/4"	8 5/8"	Gray	2051K273	000000
	12	10	12 3/4"	10 3/4"	Gray	2051K24	000000
	14	10	14"	10 3/4"	Gray	2051K276	000000
	14	12	14"	12 3/4"	Gray	2051K25	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	2051K742	0000000


	8	10	8 5/8"	Gray	2051K743	000000
	10	12	10 3/4"	Gray	2051K744	000000
	12	14	12 3/4"	Gray	2051K745	000000

Rain Caps

Prevent blockages that can disrupt airflow in vertical duct and exhaust stacks. These caps keep water and debris from entering your system.

			PVC
Duct Size	ID	Color		Each



	4	4 1/2"	Gray	2051K8	0000000


	6	6 5/8"	Gray	2051K18	000000
	8	8 5/8"	Gray	2051K38	000000
	10	10 3/4"	Gray	2051K58	000000
	12	12 3/4"	Gray	2051K78	000000
	14	14"	Gray	2051K98	000000

Intake Hoods

Capture air, vapors, and fumes and funnel them away. These hoods direct contaminants into your duct system and away from workers and machines.

			PVC
Duct Size	ID	Color		Each



	4	4 1/2"	Gray	2051K873	0000000


	6	6 5/8"	Gray	2051K874	000000
	8	8 5/8"	Gray	2051K875	000000
	10	10 3/4"	Gray	2051K876	000000
	12	12 3/4"	Gray	2051K877	000000

End Caps

Cover unused duct openings to prevent air from leaking, dust from escaping, and debris from entering. End caps are often used to seal duct after changes to your system or equipment. To make modifications or expand your line, remove the cap.

			PVC
Duct Size	ID	Color		Each



	4	4 1/2"	Gray	2051K127	000000


	6	6 5/8"	Gray	2051K121	000000
	8	8 5/8"	Gray	2051K122	000000
	10	10 3/4"	Gray	2051K123	000000
	12	12 3/4"	Gray	2051K124	000000
	14	14"	Gray	2051K125	000000

Duct Airflow Dampers

Turn the lever to adjust airflow.

					PVC
	Duct Size	ID	Overall Lg.	Color		Each
Standard Airflow Damper







				Female

				4	4 1/2"	7 1/2"	Gray	2051K165	0000000


				6	6 5/8"	8 1/4"	Gray	2051K16	000000
				8	8 5/8"	10 1/2"	Gray	2051K36	000000
				10	10 3/4"	13"	Gray	2051K56	000000
				12	12 3/4"	14 1/2"	Gray	2051K76	000000

Duct Blast Gates

Open and close the slide to control airflow to sections of duct. Blast gates turn flow on or off.

			Overall
	Duct Size	ID	Wd.	Ht.	Dp.	Color		Each
PVC



		4	4 1/2"	7 1/2"	14"	5"	Gray	3445K7	0000000


		6	6 5/8"	9 5/8"	17"	6 3/8"	Gray	3445K17	000000
		8	8 5/8"	11 5/8"	20 3/4"	6 3/8"	Gray	3445K37	000000
		10	10 3/4"	13 3/4"	24"	6 3/8"	Gray	3445K57	000000
		12	12 3/4"	15 3/4"	26 3/4"	6 3/8"	Gray	3445K77	000000

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"	5124K9	000000


				6	6 5/8"	3 1/4"	1 1/2"	1/4"	No	8	5/16"	5124K19	00000
				8	8 5/8"	3 1/4"	1 1/2"	1/4"	No	10	5/16"	5124K39	00000
				10	10 3/4"	3 1/4"	1 3/8"	1/4"	No	12	5/16"	5124K59	00000
				12	12 3/4"	3 1/2"	1 3/8"	1/4"	No	16	5/16"	5124K79	000000
				14	14"	3 1/2"	1 3/4"	1/4"	No	16	5/16"	5124K99	000000
				16	16"	3 1/2"	1 3/4"	1/4"	No	18	5/16"	5124K49	000000

Blast Gates for Chemical-Resistant Duct

Start and stop airflow to sections of PVC duct. These gates withstand chemicals that would break down most metal components. Secure gates to duct with PVC pipe cement (not included).

		Overall			PVC
Duct Size	ID	Wd.	Ht.	Dp.		Each
4	4 1/2"	7 1/2"	14"	5"	3445K7	0000000
6	6 5/8"	9 5/8"	17"	6 3/8"	3445K17	000000
8	8 5/8"	11 5/8"	20 3/4"	6 3/8"	3445K37	000000
10	10 3/4"	13 3/4"	24"	6 3/8"	3445K57	000000
12	12 3/4"	15 3/4"	26 3/4"	6 3/8"	3445K77	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	2051K165	0000000
6	6 5/8"	8 1/4"	Gray	2051K16	000000
8	8 5/8"	10 1/2"	Gray	2051K36	000000
10	10 3/4"	13"	Gray	2051K56	000000
12	12 3/4"	14 1/2"	Gray	2051K76	000000