8" x 28" or 28" x 8" Cube Core Eggcrate Return Air Grille RG66 Black-HP 14" x 4" Decorative Wood

14" x 4" Decorative Wood Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction

+ Product Details Size - 22"w X 20"h is the size for the duct opening measurement only

ensuring they don't overlap

Actual Filter Size – 15 3/4"w x 15 3/4" x 1"

8" x 28" or 28" x 8" Cube Core Eggcrate Return Air Grille RG66 Black-HP 14" x 4" Decorative Wood+ Product Details Size 8" x 28" or 28" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" X 29. 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