Termination Vents | McMaster-Carr

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19 Products

Duct Vent Caps


Wall Mount	Sloped Roof Mount

Cover wall and roof vents to prevent cold air and debris from entering your system. These caps have damper to reduce backdrafts and a screen that blocks birds from sneaking in.

Painted Steel—Strong for a long life, these caps have a black finish to prevent rust.

	For Duct						Mounting			Painted Steel
	Ht.	Wd.	Dia.	Ht.	Wd.	Lg.	Fasteners Included	Hole Dia.	Color		Each
Wall Mount







				For Rectangular Duct

				10"	3 1/4"	—	5 5/8"	12 3/4"	8 7/8"	No	3/16"	Black	6904K36	000000


				Sloped Roof Mount







								For Rectangular and Round Duct

								10"	3 1/4"	8"	6 5/8"	14 1/4"	18 3/4"	—	—	Black	6904K34	00000

Gas Chimney Vent Pipe and Fittings

For use with gas-fired equipment, such as boilers and furnaces, these vent pipes and fittings withstand temperatures up to 400° F. Also known as type B gas vents.

To join pipes and connectors, insert a male end into a female end and secure with the included locking band.

Rain Caps

				Aluminum
Chimney Pipe Size	OD	Ga.	Certification		Each



	4	4"	28	UL Listed	2117K42	000000


	5	5"	28	UL Listed	2117K43	00000
	6	6"	28	UL Listed	2117K44	00000
	7	7"	28	UL Listed	2117K45	00000
	8	8"	28	UL Listed	2117K46	00000

Chimney Vent Caps

Cover chimneys to reduce downdrafts and prevent obstructions from entering.

							Aluminum
	For Duct Dia.	Ht.	Dia.	Ga.	Fitting Connection	Certification		Each
For Round Duct



		2 7/8" to 4 7/8"	4 1/2"	6 5/8"	22	Press Fit	UL Listed	1803K11	000000


		4 7/8" to 6 7/8"	4 3/4"	9 1/2"	22	Press Fit	UL Listed	1803K13	00000
		6 7/8" to 8 7/8"	5 7/8"	11 5/8"	22	Press Fit	UL Listed	1803K15	000000
		8 7/8" to 10 7/8"	6 1/2"	12 3/4"	22	Press Fit	UL Listed	1803K17	000000

Exhaust Pipe Vent Caps

Keep rain and debris out of vertical exhaust pipe with these caps that open with slight pressure from exhaust. They are often used on generators and other large outdoor equipment.

						Powder-Coated Steel
For Duct Dia.	Ht.	Lg.	Ga.	Fitting Connection	Color		Each
1" to 1 3/16"	3"	4 5/16"	16	Slip On	Gray	2757N11	000000
1 1/4" to 1 7/16"	3"	4 5/8"	16	Slip On	Gray	2757N12	00000
1 1/2" to 1 11/16"	3"	4 7/8"	16	Slip On	Gray	2757N13	00000
1 3/4" to 1 15/16"	3 1/4"	5 3/16"	16	Slip On	Gray	2757N14	00000
2" to 2 3/16"	3 1/4"	6 3/8"	16	Slip On	Gray	2757N15	00000

High-Temperature Chimney Vent Pipe and Fittings

Built to withstand temperatures up to 1000° F, these vent pipes and fittings are for use with boilers, furnaces, stoves, and other equipment that is fired by gas, oil, wood, or coal.

To join pipes and connectors, twist a male end into a female end and secure with the included locking band.

Rain Caps

			304 Stainless Steel
Chimney Pipe Size	Ga.	Certification		Each



	6	28	UL Listed	1716K46	0000000


	8	28	UL Listed	1716K47	000000
	10	28	UL Listed	1716K48	000000