30" x 32" or 32" x 30" Cube Core Eggcrate Return Air Grille Filter Grille } (function () { const

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+ Product Details Size – 16" x 16" is the size for the duct opening measurement only

This simple adjustment reduces HVAC strain

rust-free aluminum

ensuring optimal circulation throughout your space

30" x 32" or 32" x 30" Cube Core Eggcrate Return Air Grille Filter Grille } (function () { const+ Product Details Size 30" x 32" or 32" x 30" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31. 75" X 33. 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