6" x 16" or 16" x 6" Cube Core Eggcrate Return Air Grille Return Grille + Product Details Size –

+ Product Details Size – 12"w X 4"h is the size for the duct opening measurement only

Crafted for durability and rust-resistance

Pressure rating: 2300 to 6500 psi

3 * Insulation density is 30kgs/CBM = 0

Operating temperature from -40°f to +248°f [-40°c to +120°c]

6" x 16" or 16" x 6" Cube Core Eggcrate Return Air Grille Return Grille + Product Details Size –+ Product Details Size 6" x 16" or 16" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 8. 5" X 18. 5". 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