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"] return grille + Product Details Size &

+ Product Details Size & Compatibility – The size of galvanized sheet metal straight floor boot is 10" X 6" X 8"

With a 8" diameter for the duct opening measurement

+ Product Details Size & Compatibility – The size of sheet metal pipe is 5" round x 24"long

Actual Filter Size – 27 3/4"w x 11 3/4" x 1"

reduced fire hazards

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"] return grille + Product Details Size &+ Product Details Size Refers to duct opening only. The face frame extends roughly 1. 5" on each side. Do not measure the overall grille for sizing. Design All aluminum frame and back blades. Rustproof and built to last in moisture prone environments. Quiet Airflow Opposing blade damper design reduces vibration and noise for smoother air distribution. Clean Finish White powder coated surface resists chips, scratches, and discoloration over time. Easy