16" x 16" Cube Core Eggcrate Return Air Grille Powder Coated and a polished

and a polished

actual front end outer dimensions are approximately 21

High Quality – Polished pre-finish gloss varnish ready to install - can also be sanded and re-finished according to application needs

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rust-free aluminum construction with smooth finished edges and counter-sunk screw holes (screws included)

16" x 16" Cube Core Eggcrate Return Air Grille Powder Coated and a polished+ Product Details Size 16" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" X 17. 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