Marley HBB Series Liquid filled electric hydronic baseboard heater in Navajo white color with powder coated finish is floor/wall mountable. It is fabricated of minimum 0.032-Inch pre-painted steel with 0.040-Inch electro galvanized steel control boxes. It features 18 gauge support brackets. The front cover of the heater is fabricated with 0.032-Inch pre-painted steel. Heating element wire consists of 80% nickel and 20% chromium. Heating element wire can be immersed in a heat-transfer liquid and sealed in a heater length copper tube. It has a power rating of 1706/1280 BTU/hour. It has a voltage rating of 240/208 Volts, current rating 2.1/1.8 Amps and power rating of 500/375 Watts.Heater features heavy-duty welded steel louvered grilles that discourage insertion of foreign objects and direct heat outward into the room. It measures 28 Inch x 2-15/16 Inch x 8-3/8 Inch. Junction box is made of high-strength Lexan ; to resist scratches and wear marks. Heater is ideal for new home construction, remodeling or room additions. The 1-Phase heater comes with steel housing for added protection. Aluminum fins block sheath radiation to front and back of heater body. Heater is cUSUL listed. Also known as -Q-Mark HBB504 Hydronic Baseboard Heater-HBB504 Electric/Hydronic Liquid-Filled Baseboard Heater - HBB Series Navajo Whit-Marley HBB504 Liquid Filled Electric Hydronic Baseboard Heater 500/375 Watt 240