6" x 6" [Duct Opening] Ceiling Supply Diffuser Vent Cover – Corner Direction with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 9" x 9"] 12" Round Duct Pipe featuring a 3/8 inch space

featuring a 3/8 inch space between louvers

+ Product Details Size – 22"w X 30"h is the size for the duct opening measurement only

with screws included to make setup quick and hassle-free

+ Product Details Size – 20"w X 14"h is the size for the duct opening measurement only

6" x 6" [Duct Opening] Ceiling Supply Diffuser Vent Cover – Corner Direction with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 9" x 9"] 12" Round Duct Pipe featuring a 3/8 inch space+ 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