20" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Filter Grille fasten the edges to studs Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

fasten the edges to studs with the provided screws

Actual Filter Size – 15 3/4"w x 24 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 6" OR 6" X 18" duct opening (measured at the opening)

The crank handle lever makes it easy to adjust to every weather situation

Versatile Compatibility: Our ceiling grills aren't limited to just T bar drop ceilings

20" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Filter Grille fasten the edges to studs Compatible With Duct 7in Applications This sheet metal DDAG A 1212 fasten the edges to studs with the provided screws Actual Filter Size – 15 3 4"w x 24 3 4" x 1"