411018-S&P 18″ X 18″ series 411 automatic exhaust damper. Max velocity of 2000 FPM. December 19, 2019 | No Comments 411018-S&P 18″ X 18″ 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-411018-S&P 18" X 18" series 411 automatic exhaust damper. Max velocity of 2000 FPM. Category: S&P SQB Belt Drive Square Inline Centrifugal Duct Fans - 3 Phase Description Description S&P 18″ X 18″ series 411 automatic exhaust damper. Max velocity of 2000 FPM. Related Related products VFSSQ06-21-S&P floor mount spring vibration isolators. SQ 6-20. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart SQB07ML3S-S&P SQB07 square inline belt drive duct fan. 1/4 Hp, 208-230/460/3/60 motor. 1530 RPM. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart VFRSQ18-20-S&P floor mount rubber vibration isolators. SQ 18-20. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart VFSSQ24-30-S&P floor mount spring vibration isolators. SQ 24-30. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart Related