16" x 36" or 36" x 16" Cube Core Eggcrate Return Air Grille ceiling Conveniently taped together as a

Conveniently taped together as a single piece

Q: Why BLACK

+ Product Details Size – 26" x 26" is the size for the duct opening measurement only

Performance – High diffusion induction rates result in rapid temperature and velocity equalization of the mixed air mass well above the zone of occupancy

16" x 36" or 36" x 16" Cube Core Eggcrate Return Air Grille ceiling Conveniently taped together as a+ Product Details Size 16" x 36" or 36" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" X 37. 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