32" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w30h30 + Product Details Size – Ducting Components RG2016 FBA-HP Applications The C box

+ Product Details Size – 6" x 10" or 10" x 6" is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 12" OR 12" X 16" duct opening (measured at the opening)

Filter Size - 19

please note that the total outer dimensions of the grille measure 8" in diameter

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 34" or 34" x 10" duct opening (measured at the opening)

32" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w30h30 + Product Details Size – Ducting Components RG2016 FBA HP Applications The C box + Product Details Size – 6" x 10" or 10" x 6" is the size for the duct opening measurement only + Product Details Perfect Fit & Easy Sizing Designed for a 16" x 12" OR 12" X 16" duct opening (measured at the opening)