As a direct replacement for the legacy kit 399

this brushless DC motor technology offers superior efficiency compared to traditional PSC motors

it expands easily into the existing plastic 2200/2250 frame (not included)

Enhanced Thermal Safety: Integrated automatic reset thermal overload protection prevents winding failure during restricted airflow conditions

the sensor maintains its +7°F/-8°F tolerance

Dwyer Instruments LPG4-D8122N Pressure Gage 320788-703 As a direct replacement forThe Dwyer Instruments LPG4 D8122N is a professional grade low pressure gage designed for precision monitoring in commercial HVAC and industrial piping systems. Engineered with beryllium copper diaphragm sensing elements and brass wetted parts, this 2 1 2 inch gage provides a reliable 0 to 15" w. c. range with a rated accuracy of 1. 5% full scale. The 1 4" male NPT bottom connection ensures seamless integration into standard manifolds and gas lines.