34" x 36" or 36" x 34" Cube Core Eggcrate Return Air Grille Material_Steel + Product Details Size -

+ Product Details Size - 28"w X 26"h is the size for the duct opening measurement only

+ Product Details Size – 34"w X 14"h is the size for the duct opening measurement only

and smooth surface

Works for all Air Conditioning applications including Ductless Mini-Split

plus { display: inline-block

34" x 36" or 36" x 34" Cube Core Eggcrate Return Air Grille Material_Steel + Product Details Size -+ Product Details Size 34" x 36" or 36" x 34" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 35. 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