10" x 36" or 36" x 10" Cube Core Eggcrate Return Air Grille 14in diameter Actual Filter Size – 33

Actual Filter Size – 33 3/4"w x 35 3/4" x 1"

Design – Removable frame for easy filter change & cleaning - uses a 1" thick filter

actual front end outer dimensions are approximately 32 5/8" width X 16 5/8" height

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Can be hooked up with our Butterfly Dampersfor precise airflow control

10" x 36" or 36" x 10" Cube Core Eggcrate Return Air Grille 14in diameter Actual Filter Size – 33+ Product Details Size 10" x 36" or 36" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 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