14" X 25" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 16 5/8" X 27 5/8"] w20h20 Actual Filter Size – 29

Actual Filter Size – 29 3/4"w x 13 3/4" x 1"

All of these grills have dampers

Whilst the maximum pressure for R410 is 700 PSI

+ Product Details Size - 25"w X 20"h is the size for the duct opening measurement only

+ Product Details Size - 20"w X 16"h is the size for the duct opening measurement only

14" X 25" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 16 5/8" X 27 5/8"] w20h20 Actual Filter Size – 29+ Product Details Size 14"w X 25"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 16 5 8" width X 27 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