12" x 14" or 14" x 12" Cube Core Eggcrate Return Air Grille 14" Diameter Do not measure the overall

Do not measure the overall size of the register itself

For 10" duct opening

actual front end outer dimensions are approximately 30 5/8" width X 10 5/8" height

75"H – fits a 16" X 12" duct opening

Actual Filter Size – 11 3/4"w x 23 3/4" x 1"

12" x 14" or 14" x 12" Cube Core Eggcrate Return Air Grille 14" Diameter Do not measure the overall+ Product Details Size 12" x 14" or 14" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" X 15. 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