8" x 8" [Duct Opening] Flat Plaque Aluminum Ceiling Supply Diffuser Duct Cover with Lever-Operated Damper for Air Flow Control [Outer Dimensions: 11" x 11"] w12h12 Designed to last up to

Designed to last up to three months depending

extra leather-lined pockets

actual front end outer dimensions are approximately 22 5/8" width X 14 5/8" height -

improving indoor air quality

Actual Filter Size – 21 3/4"w x 5 3/4" x 1"

8" x 8" [Duct Opening] Flat Plaque Aluminum Ceiling Supply Diffuser Duct Cover with Lever-Operated Damper for Air Flow Control [Outer Dimensions: 11" x 11"] w12h12 Designed to last up to+ 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