Round Backdraft Dampers | McMaster-Carr

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Duct Size

Shape

Material

Stainless Steel

ID

Fitting Connection

Quick-Disconnect Clamp

Slide Material

Stainless Steel

OD

Component

Downdraft Diverter

Gender

Overall Width

DFARS Specialty Metals

RoHS

Export Control Classification Number (ECCN)

REACH

Gauge

Duct Profile

Performance

Chemical Resistant

Corrosion Resistant

Quick Disconnect

Overall Height

End Construction

For Duct Diameter

1 1/4" to 1 7/16"

1 1/2" to 1 11/16"

1 3/4" to 1 15/16"

2 7/8" to 4 7/8"

4 7/8" to 6 7/8"

6 7/8" to 8 7/8"

8 7/8" to 10 7/8"

Opening/Closing Method

Finish

Mounting Location

Length

Overall Depth

Blade Material

304 Stainless Steel

How can we improve?

261 Products

Heating, Ventilation, and Air Conditioning

Duct Blast Gates

Duct Blast Gates

Slide open and closed to control flow of air and material

Duct Vent Caps

Reduce downdrafts and prevent obstructions from entering vents

Barometric Draft Dampers

Barometric Draft Dampers

Maintain consistent airflow in your furnace to improve its performance

Duct Airflow Dampers

Duct Airflow Dampers

Regulate airflow to sections of duct

Duct Downdraft Diverters

Duct Downdraft Diverters

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

Duct Fire Dampers

Duct Fire Dampers

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

Chimney Vent Caps

Chimney Vent Caps

Cover chimneys to reduce downdrafts and block out debris

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