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 611035-S&P 35″ X 35″ series 611 automatic exhaust damper. Max velocity of 2250 FPM. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart VFRSQ24-30-S&P floor mount rubber vibration isolators. SQ 24-30. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart 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 VHRSQ24-30-S&P hanging style rubber vibration isolators. SQ 24-30. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart Related