411028-S&P 28″ X 28″ series 411 automatic exhaust damper. Max velocity of 2000 FPM. December 19, 2019 | No Comments 411028-S&P 28″ X 28″ 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-411028-S&P 28" X 28" 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 28″ X 28″ series 411 automatic exhaust damper. Max velocity of 2000 FPM. Related Related products MGSQB2024-S&P motor safety guard (cover). Not mounted. SQB 20-24. 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 411018-S&P 18″ X 18″ 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 411022-S&P 22″ X 22″ 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 Related