16" X 30" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 18 5/8" X 32 5/8"] Color_White For a visual guide on Product Details Size 30 LO1828 12in diameter

For a visual guide on how to measure your vent hole before ordering a grille

actual front end outer dimensions are approximately 32 5/8" width X 20 5/8" height

Operating temperature from -40°f to +248°f [-40°c to +120°c]

+ Product Details Size – 20"w X 30"h is the size for the duct opening measurement only

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16" X 30" Steel Return Air Filter Grille for 1" Filter Fixed Hinged [Outer Dimensions: 18 5 8" X 32 5 8"] Color_White For a visual guide on Product Details Size 30 LO1828 12in diameter For a visual guide on how to measure your vent hole before ordering a grille actual front end outer dimensions are approximately 32 5 8" width X 20 5 8" height