411020-S&P 20″ X 20″ series 411 automatic exhaust damper. Max velocity of 2000 FPM. December 20, 2019 | No Comments 411020-S&P 20″ X 20″ series 411 automatic exhaust damper. Max velocity of 2000 FPM. Add To Quote Request This product is already in quote request list View Your Quote Cart SKU: AAIS-SP-411020-S&P 20" X 20" series 411 automatic exhaust damper. Max velocity of 2000 FPM. Category: S&P SQD Direct Drive Square Inline Centrifugal Duct Fans Description Description S&P 20″ X 20″ series 411 automatic exhaust damper. Max velocity of 2000 FPM. Related Related products 411016-S&P 16″ X 16″ series 411 automatic exhaust damper. Max velocity of 2000 FPM. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart VHSSQ06-20-S&P hanging style spring vibration isolators. SQ 6-20. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart VFRSQ06-15-S&P floor mount rubber vibration isolators. SQ 6-15. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart 411611-S&P damper motor option. Ships loose. 115/230 VAC 60 Hz power open, spring return motor. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart Related