28" x 28" Cube Core Eggcrate Return Air Grille return grille + Product Details Size –

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

this grille boasts a sleek frame that ensures a refined and seamless look

actual front end outer dimensions are approximately 34 5/8" width X 16 5/8" height

+ Product Details Size – 28"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - 12"w X 12"h is the size for the duct opening measurement only

28" x 28" Cube Core Eggcrate Return Air Grille return grille + Product Details Size –+ Product Details Size 28" x 28" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 29. 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 electric