34" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 20 5/8"] Color_White ready to cut for size

ready to cut for size of vent pipe

Actual Filter Size – 33 3/4"w x 5 3/4" x 1"

Horizontal blades in the front

Tamper-Proof Locking Mechanism – Includes an eight-tumbler lock with a supplied key to prevent unauthorized access

Actual Filter Size – 11 3/4"w x 7 3/4" x 1"

34" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 20 5/8"] Color_White ready to cut for size+ Product Details Size 34"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 36 5 8" width X 20 5 8" height Actual Filter Size 33 3 4"w x 17 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.