12" X 28" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 30 5/8"] w22h22 actual front end outer dimensions Height_16in RG1612AL Product Details Size 14

actual front end outer dimensions are approximately 32 5/8" width X 36 5/8" height

you can watch this informative video tutorial: How to Measure Your Vent Hole Before Ordering a Grille

+ Product Description

actual front end outer dimensions are approximately 14 5/8" width X 36 5/8" height

Actual Filter Size – 17 3/4"w x 23 3/4" x 1"

12" X 28" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 14 5 8" X 30 5 8"] w22h22 actual front end outer dimensions Height_16in RG1612AL Product Details Size 14 actual front end outer dimensions are approximately 32 5 8" width X 36 5 8" height you can watch this informative video tutorial: How to Measure Your Vent Hole Before Ordering a Grille