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 FFC300-S&P 300 CFM inline cabinet fan. 120 VAC. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart 613-S&P model 613 wall cap. Aluminum natural finish. Built in backdraft damper and birdscreen. For 12″ round duct. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart 636-S&P model 636 sloped roof cap. For 3″ or 4″ round duct, backdraft damper and birdscreen. Steel, black epoxy. Read more Add To Quote Request This product is already in quote request list View Your Quote Cart 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 Related