12" x 12" [Duct Opening] Ceiling Supply Diffuser Vent Cover – 1-Way Airflow with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 15" x 15"] Height_18in 40" x 16" Aluminum Spiral

40" x 16" Aluminum Spiral Duct Air Vent Grille Cover - Fully Adjustable Double Deflection HVAC Air Supply

this pump is easy to install in both new and existing applications

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 18" or 18" x 6" duct opening (measured at the opening)

+ Product Details Size - 22"w X 14"h X 2"d (for duct opening measurement only)

12" x 12" [Duct Opening] Ceiling Supply Diffuser Vent Cover – 1-Way Airflow with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 15" x 15"] Height_18in 40" x 16" Aluminum Spiral+ 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