6" x 36" or 36" x 6" Cube Core Eggcrate Return Air Grille 8in diameter Design – These are specially Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

Design – These are specially sized to fit into all drop ceilings

much more than required 700 PSI for R410

actual front end outer dimensions are approximately 22 5/8" width X 14 5/8" height

+ Product Details Size - 8"w X 4"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 28 5/8" width X 34 5/8" height

6" x 36" or 36" x 6" Cube Core Eggcrate Return Air Grille 8in diameter Design – These are specially Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Design – These are specially sized to fit into all drop ceilings much more than required 700 PSI for R410