26" x 26" Cube Core Eggcrate Return Air Grille 18" Round Duct Pipe this HVAC vent duct cover

this HVAC vent duct cover ensures durability and reliability

75" Width X 5

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 24" OR 24" X 16" duct opening (measured at the opening)

+ Product Details Size – 20"w X 36"h is the size for the duct opening measurement only

26" x 26" Cube Core Eggcrate Return Air Grille 18" Round Duct Pipe this HVAC vent duct cover+ 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