16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Grille 2-Way Actual Filter Size – 27

Actual Filter Size – 27 3/4"w x 9 3/4" x 1"

you have 16 different varieties to choose from

Actual Filter Size – 29 3/4"w x 11 3/4" x 1"

Actual Filter Size – 13 3/4"w x 17 3/4" x 1"

Actual Filter Size – 24 3/4"w x 23 3/4" x 1"

16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Grille 2-Way Actual Filter Size – 27+ Product Details Size 16" x 34" or 34" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 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