This model relies on the primary or secondary circuit protection provided by the boiler's integrated control board or external inline fusing

and Comfortmaker units without mounting bracket adjustments

Versatile Output Configuration: Dual SPDT relays and a floating output provide flexible control for dampers

ensuring the system maintains correct pressure and volume during operation

Constructed from high-grade reinforced polymer to resist heat-induced warping and chemical corrosion

Greenheck 304272 Motor 318973-401 This model relies on theThe Greenheck 304272 Motor is a high performance 1 2 HP replacement motor engineered for industrial and commercial ventilation systems. Operating at a fixed 1725 RPM on a 115V single phase power supply, this motor is a direct OEM component designed for precise fitment in Greenheck fan assemblies and power roof ventilators. As a TEO (Totally Enclosed) or Open Drip Proof (ODP) variant depending on the specific housing application, it provides reliable