34" x 34" Cube Core Eggcrate Return Air Grille Round Damper Ring + How To Measure A

+ How To Measure A Grille

High Quality – high quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

Ideal for Walls & Ceilings: Designed for seamless installation in standard 16" X 12" duct openings

+ Product Details Size - 5" Diameter is the size for the duct opening measurement only

actual front end outer dimensions are approximately 20 5/8" width X 338 5/8" height

34" x 34" Cube Core Eggcrate Return Air Grille Round Damper Ring + How To Measure A+ Product Details Size 34" x 34" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 35. 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 electric