25" X 36" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 27 5/8" X 38 5/8"] 18in diameter + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 32"w X 4"h is the size for the duct opening measurement only

+ Product Details Size – 34"w X 12"h is the size for the duct opening measurement only

Please check the measuring guide to ensure a proper fit

/* more readable bullets */ } /* LINK STYLING (PDF) */ #hvac-product-accordion a { color: #1a73e8

actual front end outer dimensions are approximately 20 5/8" width X 28 5/8" height

25" X 36" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 27 5 8" X 38 5 8"] 18in diameter + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 32"w X 4"h is the size for the duct opening measurement only + Product Details Size – 34"w X 12"h is the size for the duct opening measurement only