Winning an Honorable Mention in the Energy Category at the AHR Exposition in Jan. 2003, the Milli-Damper MVG-F Series Millivolt Flue Damper from Effikal improves the efficiency of gas-fired appliances using electricity generated at the appliance. The damper does this by preventing the residual heat in the appliance from escaping through the exhaust vent after the main burner shuts off, allowing the appliance to utilize more of the energy resulting from gas combustion. Because the damper operates on electricity generated by the appliance, an external supply is not required. Effikal International Inc.