Two Connected Evolution Boilerless,Convection Steamers featuring Steam Vector Technology,LP gas,holds (6) 12" x 20" x 2-1/2" deep pans each compartment,Digital Controls,water and drain connection required,warranty NOT voided by water quality,NO water filtration required,60000 BTU,(2) 120/60/1ph,5 cord & NEMA 5-15P,ENERGY STAR (Includes stand in configuration of choice)