8" x 28" or 28" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 30.5"] w24h24 + Product Details Perfect Fit 4 X 12 Is CRFG2028 Width_14in

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 32" OR 32" X 16" duct opening (measured at the opening)

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 36" OR 36" X 14" duct opening (measured at the opening)

75" Height - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE

Heavy Gauge Steel – Heavier gauge than needed

8" x 28" or 28" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum White [Outer Dimensions: 10.5" X 30.5"] w24h24 + Product Details Perfect Fit 4 X 12 Is CRFG2028 Width_14in + Product Details Perfect Fit & Easy Sizing Designed for a 16" x 32" OR 32" X 16" duct opening (measured at the opening) display === 'none') { dd