Hi Sonja, It is sold as a wood burning unit but you can get a gas conversion kit from Firecrystals who make easy-to-install, drop-in kits for all of my designs. They also sell the glass that covers the gas kit. It ships ready for gas conversion.

HI John. I live in the northeast and would leave the firepit out all year. What, if anything, should I do to maintain its beauty and longevity? Does it need to be covered and treated in any way for corrosion?

Once the patina develops over the first few months, the rust forms a
protective coating preventing air from further oxidizing the metal. All
things must eventually cease to exist, but the heavy steel of my
firebowls ensures that they will last for many, many generations.

The only maintenance really required is to remove the ashes from wood
fires periodically. The best way to do this is to use a shovel blade
without a handle as a scoop. When ashes get wet, they become caustic and
also hold water to the steel promoting accelerated rust. Allow bowl to
cool overnight before cleaning. Wear leather gloves when cleaning.