Each unit processes up to 16 flasks at once and contains 2–18-Ga. stainless steel tanks. Gas fuel connections are standard 1/2" NPT (1.3cm). Each tank has a stainless steel insert to place flasks/presses on top and comes with 4 faucets and pump to recirculate water and filters for wax. Each unit fits the standard Handler #261 Boilout Cabinet.