20" x 36" or 36" x 20" Cube Core Eggcrate Return Air Grille Color_Aluminum also referred to as T-Bar

also referred to as T-Bar or Lay-in system

Powder-coat finish – Smooth

+ Product Details Size - 34"w X 36"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 16 5/8" width X 8 5/8" height

actual front end outer dimensions are approximately 36 5/8" width X 36 5/8" height

20" x 36" or 36" x 20" Cube Core Eggcrate Return Air Grille Color_Aluminum also referred to as T-Bar+ Product Details Size 20" x 36" or 36" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" X 37. 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