


METAL ROUND BACK VALVE ?200
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
METAL ROUND BACK VALVE ?200Backdraft spring loaded damper designed for automatic shutoff of the round ducts and preventing back draft of air when ventilation system is switched off. Damper vanes are opened with the pressure generated by air stream and are closed by the spring. With galvanized axis, and riffles to prevent spring displacement. ? 200
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