SunJel Fume-free Firespace Gel Fuel Canister, Pure Gel, 24-Pack Each canister produces approximately 3 hours with a beautiful 7 inch vibrant yellow flame and has a wonderful crackling sound Burns cleanly and without fumes or odor, it is perfect for indoor as well as outdoor decor settings 3.5-inches wide by 4-inches high disposable 100% recyclable metal canister. dent resistant cans Burn time variables include but are not limited to: type of fireplace, elevation, airflow, as well as many other conditions Made in the USA and backed by a 1 year warranty Torches and lanterns with gel fuel don&#039;t just accent an environment, they become the focal point. Gel fuel creates warmth and connection with the large, bright flame. Clean burning fuel that&#039;s perfect for indoor or outdoor use. Single-use canisters contain flame and prevent pouring accidents.