423-S&P galvanized steel round transition. 4.5 X 18.5 to 10″ round. December 20, 2019 | No Comments 423-S&P galvanized steel round transition. 4.5 X 18.5 to 10″ round. Add To Quote Request This product is already in quote request list View Your Quote Cart SKU: AAIS-SP-423-S&P galvanized steel round transition. 4.5 X 18.5 to 10" round. Category: S&P FFC Inline/Cabinet Ventilators Description Description S&P galvanized steel round transition. 4.5 X 18.5 to 10″ round. Related Related products D100-S&P twin damper flaps and mounting hardware kit. (FFC2000) Read more Add To Quote Request This product is already in quote request list View Your Quote Cart FFC2000-S&P 2000 CFM inline cabinet fan. 120 VAC. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart 641-S&P model 641 wall cap. Aluminum natural finish. Built in backdraft damper and birdscreen. For 6″ round duct. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart G102-S&P white enamel painted steel grille. Mounting screws included. (FFC2000) Read more Add To Quote Request This product is already in quote request list View Your Quote Cart Related