30" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades + Product Details Size - Ducting Components RG2016 FBA-HP Applications The C box

+ Product Details Size - 18"w X 18"h X 2"d (for duct opening measurement only)

+ Product Details Size – 6" x 36" or 36" x 6" is the size for the duct opening measurement only

85" height

+ Product Details Size - 16"w X 16"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 28 5/8" width X 30 5/8" height

30" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades + Product Details Size Ducting Components RG2016 FBA HP Applications The C box + Product Details Size 18"w X 18"h X 2"d (for duct opening measurement only) + Product Details Size – 6" x 36" or 36" x 6" is the size for the duct opening measurement only