14" x 16" or 16" x 14" Cube Core Eggcrate Return Air Grille 2-Way Adjustable airflow control - by

Adjustable airflow control - by rotating the middle disk

actual front end outer dimensions are approximately 16 5/8" width X 22 5/8" height

Installation Location – Ceiling

Actual Filter Size – 25 3/4"w x 25 3/4" x 1"

14" x 16" or 16" x 14" Cube Core Eggcrate Return Air Grille 2-Way Adjustable airflow control - by+ Product Details Size 14" x 16" or 16" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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