34" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 26 5/8"] Compatible With Duct 6in actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

actual front end outer dimensions are approximately 18 5/8" width X 38 5/8" height -

+ Product Details Size – 12" X 4" is the size for the duct opening (floor/vent hole) measurement only

3 * insulation density is 30kgs/cbm = 0

Both lines taped together every 18in for easier handling & installation

For a visual guide on how to measure your vent hole before ordering a grille

34" X 24" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 36 5 8" X 26 5 8"] Compatible With Duct 6in actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG A 1212 actual front end outer dimensions are approximately 18 5 8" width X 38 5 8" height + Product Details Size – 12" X 4" is the size for the duct opening (floor vent hole) measurement only