Description
S&P 20″ X 20″ series 411 automatic exhaust damper. Max velocity of 2000 FPM.
411020-S&P 20″ X 20″ series 411 automatic exhaust damper. Max velocity of 2000 FPM.
S&P 20″ X 20″ series 411 automatic exhaust damper. Max velocity of 2000 FPM.
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