18" x 22" or 22" x 18" Cube Core Eggcrate Return Air Grille 6" Round Duct Pipe 75"H – fits a 20"

75"H – fits a 20" X 20" duct opening

875" width X 11

This thoughtful design ensures optimal air circulation for your HVAC system

+ Product Details Size – 14"w X 24"h is the size for the duct opening measurement only

The design eliminates noise and prevents louvers from vibrating

18" x 22" or 22" x 18" Cube Core Eggcrate Return Air Grille 6" Round Duct Pipe 75"H – fits a 20"+ Product Details Size 18" x 22" or 22" x 18" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 75" X 23. 75". High Quality High quality, rust free aluminum construction with smooth finished edges and counter sunk screw holes (screws included); no sharp edges.. Installation Location sidewall and ceiling. Design Cubic core eggcrate design Offers highest airflow efficiency at almost 95%, reducing