26" x 26" Cube Core Eggcrate Return Air Grille 18" Round Duct Pipe actual front end outer dimensions

actual front end outer dimensions are approximately 38 5/8" width X 26 5/8" height -

Actual Filter Size – 31 3/4"w x 17 3/4" x 1"

this HVAC vent duct cover ensures durability and reliability

Carefully packaged to prevent damage during shipment

26" x 26" Cube Core Eggcrate Return Air Grille 18" Round Duct Pipe actual front end outer dimensions+ Product Details Size 26" x 26" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 75" X 27. 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 electric