14" x 14" [Duct Opening] Ceiling Supply Diffuser Vent Cover – 2-Way Airflow with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 17" x 17"] 6in diameter but you’ll appreciate the benefits

but you’ll appreciate the benefits over a long period of time

They latch on securely without needing to worry about detachment

and ducting while maintaining easy access to critical points in your wall or ceiling

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 18" OR 18" x 30" duct opening (measured at the opening)

+ Product Details Size - 10"w X 16"h X 2"d (for duct opening measurement only)

14" x 14" [Duct Opening] Ceiling Supply Diffuser Vent Cover – 2-Way Airflow with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 17" x 17"] 6in diameter but you’ll appreciate the benefits+ 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