6" x 30" or 30" x 6" Cube Core Eggcrate Return Air Grille w20h20 Width vs Height:

Width vs Height:

4" X 12" Brass Victorian Floor Register Grille - Modern Contempo Decorative Grate - HVAC Vent Duct Cover - Brass Plated

+ Product Details Size – 4"w X 8"h is the size for the duct opening measurement only

+ Product Details Size – 16" x 20" or 20" x 16" is the size for the duct opening measurement only

By means of the smooth surface

6" x 30" or 30" x 6" Cube Core Eggcrate Return Air Grille w20h20 Width vs Height:+ Product Details Size 6" x 30" or 30" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" X 31. 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