6" x 10" or 6" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 12.5"] 12" Round Duct Pipe Superior Airflow Control: Built-in damper 4 X 12 Is CRFG2028 Width_14in
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Description
6" x 10" or 6" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum White [Outer Dimensions: 8.5" X 12.5"] 12" Round Duct Pipe Superior Airflow Control: Built in damper 4 X 12 Is CRFG2028 Width_14in Superior Airflow Control: Built in damper lets you control how much air enters your room + Product Details Perfect Fit & Easy Sizing Designed for a 16" x 36" OR 36" X 16" duct opening (measured at the opening)