30" x 34" or 34" x 30" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in + Product Details Size –

+ Product Details Size – 50"w X 20"h is the size for the duct opening measurement only

and smooth surface for years to come

+ Product Details Size – 28" x 30 or 30" x 28" is the size for the duct opening measurement only

Carefully shrink wrapped with cardboard backing to prevent damage in shipment

R value rating of insulation - r3

30" x 34" or 34" x 30" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in + Product Details Size –+ Product Details Size 30" x 34" or 34" x 30" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 32. 5" X 36. 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