"OIL TYPE DF 1 FED SPEC VV-800,HEATER AND EXCHANGER ON SEPARATE SKIDS WITH COMPONENTS AND ACCESSORIES,MIN OUTPUT OF 5,000,000 BTU/HR,FITTINGS TO BE IN ACCORDANCE W/ANSI B31.1.0 FOR 150 PSI 450 DEG F SERVICE,EXTERIOR SURFACE COVERED W/STD THK FIBERGLASS INSULATION,HOSES FURNISHED,HEAT EXCHANGER FURNISHED"