34" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 20 5/8"] w18h18 Traditional HVAC systems were designed RG1620AL Quality Packaging carefully packaged 8 Feet Long

Traditional HVAC systems were designed for cold air

+ Product Details Size - 36"w X 20"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 10 5/8" width X 14 5/8" height

Design – Fixed Hinged for easy filter change & cleaning - uses a 1" thick filter

34" X 18" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 36 5 8" X 20 5 8"] w18h18 Traditional HVAC systems were designed RG1620AL Quality Packaging carefully packaged 8 Feet Long Traditional HVAC systems were designed for cold air + Product Details Size 36"w X 20"h is the size for the duct opening measurement only