Air Vents | McMaster-Carr

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Adjustable-Angle Elbow

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Polyester/Wool Fabric

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Quick-Disconnect Clamp

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1,587 Products

Fluid Handling

Air Vent Valves

Eliminate air pockets from fluid lines to maintain consistent flow and prevent surges

39 products

Breather Vents

Maintain even pressure and vacuum as temperatures change by allowing airflow in tanks and enclosures

112 products

Mufflers

Reduce noise and filter exhaust fumes

365 products

Exhaust Filter/Mufflers

Purify exhaust and muffle noise from oil-free high-vacuum pumps

3 products

Heating, Ventilation, and Air Conditioning

Louvers

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

271 products

Registers

Direct and control airflow coming out of HVAC systems

39 products

Return Grilles

Cover the opening where air is pulled into your HVAC system

35 products

Air Diverters

Guide air toward your workspace or deflect unwanted drafts

9 products

Diffusers

Evenly disperse airflow into a room to maintain a consistent temperature throughout

70 products

Duct and Fittings

Circulate air through HVAC systems using round, rectangular, and fabric duct

205 products

Enclosure Hoods

Keep enclosures watertight, even around intake and exhaust cutouts

5 products

Chimney Pipe and Fittings

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

74 products

Duct Damper Handles

Replace an existing handle or pair with a blade to create your own damper

1 product

Diffuser Dampers

Regulate the airflow coming out of drop-ceiling diffusers

10 products

Barometric Draft Dampers

Maintain consistent airflow in your furnace to improve its performance

6 products

Duct Airflow Dampers

Regulate airflow to sections of duct

99 products

Duct Blast Gates

Slide open and closed to control flow of air and material

5 products

Duct Downdraft Diverters

Prevent downdrafts from blowing back into ductwork while allowing air and fumes to vent

8 products

Diffuser Collars

Connect diffusers to duct

4 products

Duct Fire Dampers

Automatically close at high temperatures to help prevent the spread of fire through duct

13 products

Exhaust Fans

Draw stagnant and humid air out of a room or area

116 products

Electrical

Electrical Enclosure Vents

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

10 products

Electrical Enclosure Drain Vents

Prevent moisture from getting trapped inside enclosures while letting air flow through

6 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

14 products

Containers, Storage, and Furniture

Drum Vents

Prevent drum failure by releasing pressure and vacuum buildup

7 products

Facility and Grounds Maintenance

Air Admittance Valves

Allow air into drain, waste, and vent systems so you don't have to vent plumbing to the outdoors

2 products