20" X 34" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 22 5/8" X 36 5/8"] w18h18 designed for superior airflow (up

designed for superior airflow (up to 95%) and easy filter access

How to Measure Your Vent Hole Before Ordering a Grille

+ Product Details Size – 18"w X 26"h is the size for the duct opening measurement only

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Our filter grille latch is easy to use on your fingers and requires no screwdriver to open

20" X 34" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 22 5/8" X 36 5/8"] w18h18 designed for superior airflow (up+ Product Details Size 20"w X 34"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 36 5 8" height Actual Filter Size 19 3 4"w x 33 3 4" x 1" High Quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Sidewall and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter.