Sierra Flame Palisade Series Fireplace Insert Fuel Conversion KitPalisade Series Fireplace Insert Fuel Sierra Flame Fuel Conversion Kit Product Details If you've finally decided to convert your 36" Palisade see through fireplace from one fuel type to another, you've found one of the most efficient options. Maybe you no longer need the excessive heat transmitted by the propane unit; maybe you just desire a smaller, more intimate flame for a cooler environment, or maybe you're simply prefer propane tanks. Whatever