Duct Dryer Vents | McMaster-Carr

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14 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.

Vent Caps


Exhaust Vent	Intake Vent

Cover vents with caps that let air in or out.

Exhaust Vent—A built-in damper allows air to escape while blocking backdrafts, rain, and snow.

Intake Vent—Only fresh air enters though the screen—no debris or pests allowed.

Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

Lightweight Aluminum—One-third the weight of steel, aluminum ductwork is easier to handle during installation. Like galvanized steel, it resists rust in wet environments but won’t last as long.

							Galvanized Steel		Lightweight Aluminum
	Duct Size	ID	OD	Ga.	Features	Includes		Each		Each
Exhaust Vent



		3	3"	—	30	—	Backdraft Damper	———	0	1773K61	000000


		4	4"	—	30	—	Backdraft Damper	1766K484	000000	1773K62	00000
		5	5"	—	30	—	Backdraft Damper	1766K485	00000	———	0
		6	6"	—	30	—	Backdraft Damper	1766K492	00000	———	0
		6	6"	—	22	—	Backdraft Damper	———	0	1773K63	00000
		7	7"	—	30	—	Backdraft Damper	1766K486	00000	———	0
		8	8"	—	30	—	Backdraft Damper	1766K493	00000	———	0
		8	8"	—	22	—	Backdraft Damper	———	0	1773K64	000000


		Intake Vent



				4	—	3 7/8"	30	Bird Screen	—	1766K481	00000	———	0


				5	—	4 7/8"	30	Bird Screen	—	1766K482	00000	———	0
				6	—	5 7/8"	30	Bird Screen	—	1766K497	00000	———	0
				7	—	6 7/8"	30	Bird Screen	—	1766K483	00000	———	0
				8	—	7 7/8"	30	Bird Screen	—	1766K498	00000	———	0