1781-14 Laing Thermotech Htr, LowFlow Tromb, D-1 FastFlo Repl, 230v, 6.0kW,Generic 6000 $6.13 1781-14 Laing Thermotech Htr, LowFlow Tromb, D-1 FastFlo Repl, 230v, 6.0kW,Generic 6000 Dimension One/LaingProportional "fast flo" heater and circ pump complete. Replaces D-1 178-