26" x 6" or 6" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Material_Steel Actual Filter Size – 25 4 X 12 Is CRFG2028 Width_14in

Actual Filter Size – 25 3/4"w x 5 3/4" x 1"

+ Product Details Size – 24" x 24" with 10" collar T-Bar drop ceiling perforated return grill - metal back casing

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 32" OR 32" x 18" duct opening (measured at the opening)

angle the louvers up for efficient cooling

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 30" OR 30" x 28" duct opening (measured at the opening)

26" x 6" or 6" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Material_Steel Actual Filter Size – 25 4 X 12 Is CRFG2028 Width_14in Actual Filter Size – 25 3 4"w x 5 3 4" x 1" + Product Details Size – 24" x 24" with 10" collar T Bar drop ceiling perforated return grill metal back casing