32" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-4.2 Yellow + Product Details Perfect Fit RG2230 HP w4h4 const modal document

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 26" or 26" x 12" duct opening (measured at the opening)

+ Product Details Size – 20" x 22" or 22" x 20" is the size for the duct opening measurement only

Compatible with 24x24 openings and built from durable

+ Product Details Size - 25"w X 24"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 34 5/8" width X 24 5/8" height

32" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R 4.2 Yellow + Product Details Perfect Fit RG2230 HP w4h4 const modal document + Product Details Perfect Fit & Easy Sizing Designed for a 12" x 26" or 26" x 12" duct opening (measured at the opening) + Product Details Size – 20" x 22" or 22" x 20" is the size for the duct opening measurement only