UCO Candle Comparison UCO 12-Hour Natural Beeswax Candles for UCO Candle Lanterns are specially designed to fit the UCO Original Candle Lantern and the UCO Candlelier. Ideal for camping, hiking, and emergency preparedness, no outdoor adventure or survival kit is complete without a stash of candles. Each candle measures 3.5 inches in height, and features a specially sized wick that maintains ideal flame height, optimizes burn time, and minimizes dripping and soot. The 100 percent Natural Beeswax 12-Hour Candle (non-paraffin based) is clean-burning with a naturally pleasant aroma, and a burn time of 12 hours. Available in economical 3-Packs and bulk 20-Packs. Use with a UCO Candle Lantern indoors during power outages and emergencies, and outdoors for ambient camp light or to warm a tent and reduce condensation.