American Gas Lamp Works Cosmopolitan 1600R 14" Charcoal Gray Residential Pier Mount Aluminum Natural Gas Lamp With Dual Inverted Gas Mantle Light Assembly, Flat Tempered Glass Panes and Brass Plated Acorn Finial sqft108 Add the convenience of an 1200R RM2 NG DMI G9B F8P NB Add the convenience of an optional thermostat which increases the heat to 240V and the Welsbach mantle lighting system has been used the world over for more than a century American Gas Lamp Works LLC (“AGLW”) warrants that its gas and electric lighting fixtures (the “Product”) will be free from defects in material and workmanship from the date of manufacture by AGLW for the following periods: