Lined stove boards are non-UL listed ember protection stove boards. Protect the floors in front of the stove from heat, embers, hot coals, ashes, and soot. Use these stove boards under heating appliances that do not require thermal protection such as kerosene heaters, most vented and vent-free gas stoves, most pellet stoves, and electric heaters. Check the owner's manual from the appliance for floor protection requirements. Ships in full cartons of 3 each.