Description
12" x 12" [Duct Opening] Ceiling Supply Diffuser Vent Cover – Corner Direction with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 15" x 15"] 10" Round Duct Pipe + Product Details Size – MFRG2420W HP + Product Details Size – The size of a galvanized sheet metal stack boot is 12" X 3 anti corrosion Always measure the actual opening in your ceiling or wall accordion title { font size: 18px