Fan Louvers | McMaster-Carr

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Powder-Coated Aluminum

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For Duct Width

465 Products

Louvers

Adjustable-Blade Wall-Mount Louvers

Remain open only when air flows to prevent backdrafts

34 products

Louvers for Enclosures

Relieve heat buildup and prevent condensation from forming in enclosures

62 products

Adjustable-Width Fixed-Blade Wall-Mount Louvers

Slide out to the width you need to precisely fit your opening

5 products

Fixed-Blade Wall-Mount Louvers

Always open—our most basic wall louvers

14 products

Weather-Resistant Louvers for Enclosures

A gasketed sealing kit shields from dirt, moisture, and weather

21 products

Heavy Duty Fixed-Blade Wall-Mount Louvers

A thick frame and blades increase the service life

19 products

Fixed- and Adjustable-Blade Wall-Mount Louvers

Fixed front blades give you consistent sight lines from the outside
Rear blades remain open only when air flows to prevent backdrafts

5 products

Fixed-Blade Door-Mount Louvers

Allow air to circulate through doors while maintaining privacy

58 products

Weather-Resistant Fixed-Blade Wall-Mount Louvers

Drain water to keep it away from the front of blades

20 products

Roof-Mount Louvers

Open only when your roof-mounted exhaust fan is on to prevent backdrafts

22 products

Fixed-Blade Wall-Mount Louvers with Adjustable Register and Aluminum Filter

Control airflow and clean the air with the included register and filter

4 products

Heavy Duty Adjustable-Blade Wall-Mount Louvers

A thick frame and blades increase the service life

4 products

Fixed-Blade Louvers for Block and Brick Walls

Sized to replace block or bricks

3 products

Other Products

Exhaust Fans

Draw stagnant and humid air out of a room or area

95 products

Electrical Enclosure Vents

Attach to sealed enclosures so air can flow to equalize temperature and pressure

6 products

Return Grilles

Cover the opening where air is pulled into your HVAC system

35 products

Exhaust Fan Collars

Connect exhaust fans to louvers

17 products

Registers

Direct and control airflow coming out of HVAC systems

39 products

Heat Sinks

Prevent damage to equipment by dissipating excess heat

2 products