Description

40A Maximum (High Leg OK) L1+L2+Neutral+Ground

and other installations

Installation:Attach your HEPA filter to your fan

Fast acting

Backdraft Dampers Size:4in 40A Maximum (High Leg OK)Made of galvanized steel, these dampers prevent air leakage into your fan setup. They are easy to install, fit directly onto the ducting, and prevent a backdraft of air when the fans are switched off.

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

Backdraft Dampers Size:4in 40A Maximum (High Leg OK)

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