30" X 12" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 32 5/8" X 14 5/8"] Copper Coil-Insulated Line Set actual front end outer dimensions 18" Round Duct Pipe Fixed 45 horizontal blades LO1810

actual front end outer dimensions are approximately 22 5/8" width X 20 5/8" height -

const dt = event

actual front end outer dimensions are approximately 20 5/8" width X 30 5/8" height

Every grille has a front end frame

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

30" X 12" Steel Return Air Filter Grille for 1" Filter Removable Frame Black [Outer Dimensions: 32 5 8" X 14 5 8"] Copper Coil Insulated Line Set actual front end outer dimensions 18" Round Duct Pipe Fixed 45 horizontal blades LO1810 actual front end outer dimensions are approximately 22 5 8" width X 20 5 8" height const dt = event