14" x 14" [Duct Opening] Flat Plaque Aluminum Ceiling Supply Diffuser Duct Cover with Lever-Operated Damper for Air Flow Control [Outer Dimensions: 17" x 17"] Width_12in + Product Details Size -

+ Product Details Size - 25"w X 26"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 34" x 24" Or 24" x 34" duct opening (measured at the opening)

actual front end outer dimensions are approximately 34 5/8" width X 28 5/8" height

Built To Last – This HVAC tool has a sturdy aluminum alloy die cast body with plastic spray coating

14" x 14" [Duct Opening] Flat Plaque Aluminum Ceiling Supply Diffuser Duct Cover with Lever-Operated Damper for Air Flow Control [Outer Dimensions: 17" x 17"] Width_12in + 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