12" x 28" or 28" x 12" Cube Core Eggcrate Return Air Grille Copper Coil-Insulated Line Set actual front end outer dimensions

actual front end outer dimensions are approximately 32 5/8" width X 30 5/8" height

actual front end outer dimensions are approximately 25

Design – Fixed hinged for easy filter change & cleaning - uses a 1" thick filter

85" width X 15

Actual Filter Size – 29 3/4"w x 23 3/4" x 1"

12" x 28" or 28" x 12" Cube Core Eggcrate Return Air Grille Copper Coil-Insulated Line Set actual front end outer dimensions+ Product Details Size 12" x 28" or 28" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" X 29. 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