Covers newly produced, unvented, portable, catalytic, camp heaters with input ratings of 12,000 Btu per hour or less for use with propane HD-5 only. For use indoors in adequately ventilated structures and outdoors. Applies to heaters designed for self-contained fuel supplies using cylinders of not more than 75 cubic inches (2.5 pounds nominal water capacity) and those for connection to remote fuel cylinders