This forge has a FACTORY RIGIDIZED VACUUM FORMED CERAMIC LINER on the top and sides, with the Dense high siliconized Ladle Brick on the bottom. This liner is made specifically for MAJESTIC FORGE to strict specifications. It has a Rigidizer applied at the factory for a hard durable interior surface, the liner is light in weight which makes it easier to move it to where you need to use it. This forge is great for the Farrier, knife maker or general blacksmithing, and light welding. Complete setup and adjusting instructions included. Orifices have height adjustments for different altitudes, humidity, wind, etc., that can affect the operation of atmospheric forges. It has all UL rated brass orifices, a precision needle valve for burner adjustment, heavy duty adjustable regulator, hose, gauge, and fittings. This forge comes complete. All you need is an LP tank. Setup usually takes less than 10 minutes and is very simple. Full setup instructions are included. With a little care the liners normally last many years. However if you should need to replace the liner it only requires removal of a couple pins and you have full access to the liner.