16" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 18 5/8" X 20 5/8"] 2-Way Deflection With HVAC Premium you get

With HVAC Premium you get an extra measure of quality that will be visible to your family members and house guests

actual front end outer dimensions are approximately 10 5/8" width X 20 5/8" height

+ Product Details Size - 30"w X 34"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 26 5/8" width X 8 5/8" height -

Built with rust-resistant aluminum and a scratch-resistant powder-coated finish

16" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 18 5/8" X 20 5/8"] 2-Way Deflection With HVAC Premium you get+ Product Details Size 16"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 18 5 8" width X 20 5 8" height Actual Filter Size 15 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.