18" X 26" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 20 5/8" X 28 5/8"] Color_Black + Product Details Size - CRFG2028 Width_14in 4 X 12 Is

+ Product Details Size - 14"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 32 5/8" width X 18 5/8" height -

+ Product Details Size – 15" Wooden Corner Baseboard Grille

Installation Location – Wall or door mount - door thickness up to 32mm - anodised finish - smooth & beautiful

Actual Filter Size – 29 3/4"w x 17 3/4" x 1"

18" X 26" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 20 5 8" X 28 5 8"] Color_Black + Product Details Size CRFG2028 Width_14in 4 X 12 Is + Product Details Size 14"w X 18"h is the size for the duct opening measurement only actual front end outer dimensions are approximately 32 5 8" width X 18 5 8" height