Vent Covers | McMaster-Carr

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1,044 Products

Heating, Ventilation, and Air Conditioning

Louvers

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

Return Grilles

Cover the opening where air is pulled into your HVAC system

Duct Vent Caps

Reduce downdrafts and prevent obstructions from entering vents

Duct Dampers

Regulate airflow through duct by adjusting from fully open to fully closed

Registers

Direct and control airflow coming out of HVAC systems

Air Diverters

Guide air toward your workspace or deflect unwanted drafts

Enclosure Hoods

Enclosure Hoods

Keep enclosures watertight, even around intake and exhaust cutouts

Chimney Vent Caps

Chimney Vent Caps

Cover chimneys to reduce downdrafts and block out debris

Chimney Roof Flashings

Chimney Roof Flashings

Prevent leaks where chimneys pass through roofs

Chimney Pipe Fittings

Chimney Pipe Fittings

Form straight, elbow, and tee connections between lengths of chimney pipe

Chimney Storm Collars

Chimney Storm Collars

Pair with chimney roof flashing to prevent leaks where chimneys pass through roofs

Chimney Pipe

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

Diffusers

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

Diffuser Collars

Diffuser Collars

Connect diffusers to duct

Fan Guards

Shield fans to prevent injury to workers and damage to electronic components

Exhaust Fan Guards

Exhaust Fan Guards

Protect exhaust fans from debris

Flue-Gas Exhausters

Flue-Gas Exhausters

Vent furnaces and other gas- or oil-fired equipment

Electrical

Electrical Enclosure Vents

Electrical Enclosure Vents

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

Electrical Enclosure Drain Vents

Electrical Enclosure Drain Vents

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

Electrical Enclosure Drains

Electrical Enclosure Drains

Release moisture to keep components dry

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

Fluid Handling

Breather Vents

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

Pressure-Relief Valves

Pressure-Relief Valves

Protect equipment by opening at a set pressure and closing when the pressure drops; for repeated use

Air Vent Valves

Air Vent Valves

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

Containers, Storage, and Furniture

Metal Panels

Close off openings in structures while allowing air to pass through

Drum-Plug Caps

Access inside drums to fill them

Syringe Caps

Cover syringe tips when not in use to protect them and prevent leaks

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)