The "VL" designation confirms an integral vent limiting orifice

48" WC) for my existing system

as well as multiple models from GE

Compatibility is determined by the full model and serial number of the furnace

The existing 4-bolt mounting hardware is typically reused

Field Controls 01952701 Draft Control Refrigerant The "VL" designation confirms anThe Field Controls 01952701 is a 12 inch Model M+MG2 barometric draft control designed for heavy duty commercial or residential applications. This dual acting regulator maintains precise overfire draft for oil fired, gas fired, wood, or coal fired appliances. By stabilizing the draft regardless of atmospheric changes, it prevents excessive fuel consumption and protects the heat exchanger from thermal stress. The 12" M+MG2 features a gate weighted for