14" X 34" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 16 5/8" X 36 5/8"] Insulated Line Set + Product Details Size - 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size - 18"w X 24"h is the size for the duct opening measurement only

Actual Filter Size – 13 3/4"w x 29 3/4" x 1"

actual front end outer dimensions are approximately 24 5/8" width X 22 5/8" height

heat pump systems

Rigid Built For External Use– The sturdy and rigid design features noise free components that eliminates vibration and excess noise to the louvers

14" X 34" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 16 5 8" X 36 5 8"] Insulated Line Set + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 18"w X 24"h is the size for the duct opening measurement only Actual Filter Size – 13 3 4"w x 29 3 4" x 1"