Acts Like A Backsplash, Preventing Food Spatters On Wall Tile, Exposed Brick And Other Surfaces Behind The Range, And Creates A Thermal Barrier For Combustible Surfaces. Also Elevates Oven Exhaust Higher Up The Back Wall To The Ventilation Hood. Shelf Has A Usable Depth Of Approximately 8.5", And Will Support Up To 30 Lbs. Keeps Food Warm If Paired With 27" Deep Hood With Heat Lamps.