McMaster-Carr

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	For Opening Width For Opening Width

1 3/4"

8 1/2"

12"-18"

18"-24"

21"-36"

24"-36"

36"-48"

	For Opening Height For Opening Height

	Mounting Location Mounting Location

	Mount Style Mount Style


Surface	Recess	Flush

	Blade Adjustability Blade Adjustability

Movable

Fixed

	Frame Material Frame Material

	Blade Material Blade Material

	Material Material

	Component Component

	Blade Operation Blade Operation

Gravity

Motorized

Pull Chain

	Louver Panel Style Louver Panel Style

Single

Double

Triple

	Frame Thickness Frame Thickness

	Overall Height Overall Height

	Overall Depth Overall Depth

	Mounting Flange Thickness Mounting Flange Thickness

	Trade Size Trade Size

	Shape Shape

Adjustable-
Angle Elbow

Wye

60° Elbow

	For Maximum Air Velocity For Maximum Air Velocity

1,200 fpm

2,000 fpm

2,500 fpm

	Frame Finish Frame Finish

	ID ID

	OD OD

	For Duct Trade Size For Duct Trade Size

	Finish Finish

1,012 Products

Air Outlets

Diffusers, Registers, and Grilles

Round Duct and Fittings

Vent Caps

Cover external vents to reduce downdrafts and prevent obstructions from entering the vent.

Louvers

Allow air to circulate through doors, walls, roofs, and enclosures.

Gas and Chimney Vents

Exhaust gas fumes and hot air from boilers, furnaces, and stoves.

Build-Your-Own Air Hose System

With an easy-to-cut hose and push-to-connect fittings, you can install a compressed air line system in just a few hours.

Roof-Mount Exhaust Fans

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