Spark igniters for gas appliances; Oven gas igniters; Fireplace louvers, blowers, and dampers, and ash pans for fireplaces; Space heating apparatus; Ignition systems comprised of a gas supply tube with a nozzle and an electrical igniter to create a flame at the nozzle for industrial applications, namely, for igniting waste gases being discharged from industrial stacks and for igniting gas-fired boilers; Decorative grills made of non-metal non-combustible materials for use in decorating evacuation ducts, air inlets, and hot air outlets of fireplaces; Accessories for fireplaces, namely, air circulation kits consisting primarily of metal ducts and metal adaptors used to increase the amount of heat recovered from the fireplace using a blower or natural convection; Fireplace inserts, comprised of andirons, artificial logs and artificial embers powered by electricity; Heat stress machines having temperature controlled ceramic heating elements for heating tubes, pipes and welds