14" x 18" or 18" x 14" Cube Core Eggcrate Return Air Grille Compatible with Duct 6" Actual Filter Size – 19

Actual Filter Size – 19 3/4"w x 21 3/4" x 1"

actual front end outer dimensions are approximately 27 5/8" width X 26 5/8" height

+ Product Details Heavy-Duty Steel Construction - Made from 20-gauge steel for superior durability and reliable performance

actual front end outer dimensions are 11

offering maximum flexibility

14" x 18" or 18" x 14" Cube Core Eggcrate Return Air Grille Compatible with Duct 6" Actual Filter Size – 19+ Product Details Size 14" x 18" or 18" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 75" X 19. 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