6" x 26" or 26" x 6" Cube Core Eggcrate Return Air Grille Material_Steel + Product Details Size –

+ Product Details Size – 10" x 34" or 34" x 10" is the size for the duct opening measurement only

+ Product Details Size - 36"w X 32"h is the size for the duct opening measurement only

Refrigerant - 1/2" White Insulation - 50' Long

Rigid Built For External Use – The sturdy and rigid design features noise-free components that eliminate vibration and excess noise to the louvers

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6" x 26" or 26" x 6" Cube Core Eggcrate Return Air Grille Material_Steel + Product Details Size –+ Product Details Size 6" x 26" or 26" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" X 27. 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