20" X 20" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 22 5/8"] sidewall Actual Filter Size – 23

Actual Filter Size – 23 3/4"w x 19 3/4" x 1"

3 * Insulation density is 30kgs/CBM = 0

Plain Ends - Gives you the freedom to cut and flare at your own project needs

Efficient Airflow Design: The slots are meticulously angled to diversify airflow in two directions

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20" X 20" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 22 5/8"] sidewall Actual Filter Size – 23+ Product Details Size 20"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 22 5 8" height. High Quality high quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Ceiling Design Fixed hinged for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on your fingers and