18" X 20" Steel Return Air Filter Grille for 1" Filter - Fixed HInged - [Outer Dimensions: 20 5/8" X 22 5/8"] Grille + Product Details Size –

+ Product Details Size – 10"w X 20"h is the size for the duct opening measurement only

Actual Front End Outer Dimensions Are 14" Width X 6" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

+ Product Details Size – 10"w X 18"h is the size for the duct opening measurement only

and Centralized Air Ducted Units

18" X 20" Steel Return Air Filter Grille for 1" Filter - Fixed HInged - [Outer Dimensions: 20 5/8" X 22 5/8"] Grille + Product Details Size –+ Product Details Size 18"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 20 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