34" x 34" Cube Core Eggcrate Return Air Grille 2-Way actual front end outer dimensions

actual front end outer dimensions are approximately 28 5/8" width X 20 5/8" height

Designed for a 1" thick filter

+ Product Details Size - 12"w X 24"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 16 5/8" width X 27 5/8" height

The included eight-tumbler lock and supplied key provide secure access

34" x 34" Cube Core Eggcrate Return Air Grille 2-Way actual front end outer dimensions+ Product Details Size 34" x 34" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 35. 75" X 35. 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