36" X 18" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 20 5/8"] Color_R-4.2 Yellow Quality Packaging - Carefully Shrink 9" Diameter RFG1424 Black-HP Product Details Size 10

Quality Packaging - Carefully Shrink Wrapped With Cardboard Backing To Prevent Damage In Shipment

actual front end outer dimensions are approximately 12 5/8" width X 12 5/8" height

height: 20px

+ Product Details Size - 32"w X 12"h is the size for the duct opening measurement only

36" X 18" Steel Return Air Filter Grille for 1" Filter Fixed Hinged [Outer Dimensions: 38 5 8" X 20 5 8"] Color_R 4.2 Yellow Quality Packaging Carefully Shrink 9" Diameter RFG1424 Black HP Product Details Size 10 Quality Packaging Carefully Shrink Wrapped With Cardboard Backing To Prevent Damage In Shipment actual front end outer dimensions are approximately 12 5 8" width X 12 5 8" height