18" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 20 5/8" X 20 5/8"] white actual front end outer dimensions 14" Round Duct Pipe FR M 414 White For 10 duct opening

actual front end outer dimensions are approximately 26 5/8" width X 38 5/8" height -

Our grilles feature a durable powder-coat finish

/* Adding space between bullet points */ }

Actual Filter Size – 24 3/4"w x 19 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 20" or 20" x 12" duct opening (measured at the opening)

18" X 18" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 20 5 8" X 20 5 8"] white actual front end outer dimensions 14" Round Duct Pipe FR M 414 White For 10 duct opening actual front end outer dimensions are approximately 26 5 8" width X 38 5 8" height Our grilles feature a durable powder coat finish