12" x 12" [Duct Opening] Ceiling Supply Diffuser Vent Cover – 4-Way Airflow with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 15" x 15"] 18" Round Duct Pipe + Product Description Discover top-quality

+ Product Description Discover top-quality HVAC components for your home or building

Our stick-on side take off duct is made from high-quality galvanized steel for durability and rust resistance

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This 14" X 12" end cap is constructed with 26-gauge galvanized steel

actual front end outer dimensions are 25" Width X 25" Height

12" x 12" [Duct Opening] Ceiling Supply Diffuser Vent Cover – 4-Way Airflow with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 15" x 15"] 18" Round Duct Pipe + Product Description Discover top-quality+ 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