36" X 18" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 20 5/8"] w25h25 accordion dd { margin: 0

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+ Product Details Size - 18"w X 8"h is the size for the duct opening measurement only

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

actual front end outer dimensions are approximately 22 5/8" width X 16 5/8" height

with actual outer dimensions of 16

36" X 18" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 20 5/8"] w25h25 accordion dd { margin: 0+ Product Details Size 36"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 20 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