28" x 36" or 36" x 28" Cube Core Eggcrate Return Air Grille Copper Coil-Insulated Line Set + Product Details Size –

+ Product Details Size – 14"w X 32"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 27 5/8" width X 22 5/8" height

line-height: 1

+ Product Details Size - 30"w X 4"h is the size for the duct opening measurement only

100% Satisfaction Guaranteed

28" x 36" or 36" x 28" Cube Core Eggcrate Return Air Grille Copper Coil-Insulated Line Set + Product Details Size –+ Product Details Size 28" x 36" or 36" x 28" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 29. 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