6" x 6" [Duct Opening] Ceiling Supply Diffuser Vent Cover – 1-Way Airflow with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 9" x 9"] Condensate Pump Accessories this fitting is perfectly compatible

this fitting is perfectly compatible with 8-inch ducts

+ Product Details Size - 36"w X 26"h X 2"d (for duct opening measurement only)

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+ Product Details Size – Duct end cap is 18" X 8" | 26-gauge galvanized steel end cap

Crafted meticulously from high-quality steel

6" x 6" [Duct Opening] Ceiling Supply Diffuser Vent Cover – 1-Way Airflow with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 9" x 9"] Condensate Pump Accessories this fitting is perfectly compatible+ 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