30" X 30" Gray Tile Stove Board. Protect your customers' floors and walls from heat, coals, and ashes. R-CO Stove Boards can be installed against walls with no spacer needed, reducing necessary stove clearances by 66% (12" minimum clearance is always required). These boards have a 3 R value. Stove boards come in brick and gray tile. The brick style has a textured surface, while the gray tile surface is smooth. Both styles have recessed mortar joints to give a three-dimensional effect. Stove boards are approximately 1 1/4" thick. This product ships in approximately 1 days