22" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14in diameter + Product Details Perfect Fit Suitable for all AC 8in diameter 12125SDCLNGBX

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 32" OR 32" X 14" duct opening (measured at the opening)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 26" OR 26" x 36" duct opening (measured at the opening)

With precise measurements and easy installation

actual front end outer dimensions are approximately 22 5/8" width X 28 5/8" height

22" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14in diameter + Product Details Perfect Fit Suitable for all AC 8in diameter 12125SDCLNGBX + Product Details Perfect Fit & Easy Sizing Designed for a 14" x 32" OR 32" X 14" duct opening (measured at the opening) + Product Details Perfect Fit & Easy Sizing Designed for a 36" x 26" OR 26" x 36" duct opening (measured at the opening)