Vent Covers | McMaster-Carr

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Shape

Adjustable-Angle Elbow

System of Measurement

Opening Width

Material

Ferrite Ceramic

Stainless Steel

Opening Height

Mounting Profile

Mounting Location

Under Furniture

Overall Height

Frame Material

Stainless Steel

Overall Width

Duct Size

Blade Material

Stainless Steel

For Use With

Ethylene Glycol

Liquid Nitrogen

DFARS Specialty Metals

REACH

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

Pipe Size

For Duct Width

7 1/2" to 9 1/2"

11 1/2" to 13 1/2"

Width

Opening Diameter

Faceplate Width

Body Material

Stainless Steel

Color

For Duct Height

7 1/2" to 9 1/2"

11 1/2" to 13 1/2"

For Duct Shape

How can we improve?

1,070 Products

Most Likely Products

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

Registers

Direct and control airflow coming out of HVAC systems

Enclosure Hoods

Enclosure Hoods

Keep enclosures watertight, even around intake and exhaust cutouts

Air Diverters

Guide air toward your workspace or deflect unwanted drafts

Electrical Enclosure Vents

Electrical Enclosure Vents

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

All Results

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

Registers

Direct and control airflow coming out of HVAC systems

Enclosure Hoods

Enclosure Hoods

Keep enclosures watertight, even around intake and exhaust cutouts

Air Diverters

Guide air toward your workspace or deflect unwanted drafts

Chimney Vent Caps

Chimney Vent Caps

Cover chimneys to reduce downdrafts and block out debris

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

Chimney Roof Flashings

Chimney Roof Flashings

Prevent leaks where chimneys pass through roofs

Diffusers

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

Diffuser Dampers

Diffuser Dampers

Regulate the airflow coming out of drop-ceiling diffusers

Duct Airflow Dampers

Duct Airflow Dampers

Regulate airflow to sections of duct

Diffuser Collars

Diffuser Collars

Connect diffusers to duct

Barometric Draft Dampers

Barometric Draft Dampers

Maintain consistent airflow in your furnace to improve its performance

Duct Fire Dampers

Duct Fire Dampers

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

Syringe Caps

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

Drum Plug Caps

Access inside drums to fill them

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