30" x 36" or 36" x 30" Cube Core Eggcrate Return Air Grille Compatible with Duct 8" Noise free components - no

Noise free components - no vibrating louvers etc

+ Product Details Size - 30"w X 18"h X 2"d (for duct opening measurement only)

actual front end outer dimensions are approximately 14 5/8" width X 26 5/8" height

The Contempo slotted Grate

Actual Filter Size – 33 3/4"w x 11 3/4" x 1"

30" x 36" or 36" x 30" Cube Core Eggcrate Return Air Grille Compatible with Duct 8" Noise free components - no+ Product Details Size 30" x 36" or 36" x 30" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 32. 5" X 38. 5". 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