This heavy-duty 2500W 277V Restring Kit features a high-grade Nichrome heating element coil designed for maximum thermal transfer and durability

ensuring precise trip curves and reset timings that generic alternatives cannot match

Does this unit require a power supply or wiring

continuous-duty operation

Lennox 71M80 Concentric Kit 30067439-890 This heavy-duty 2500W 277V RestringThe Lennox 71M80 Concentric Kit is a professional grade 1 1 2" Concentric Vent Kit designed to streamline high efficiency furnace venting by combining intake and exhaust into a single roof or sidewall penetration. Engineered specifically for compatibility with Lennox HVAC systems, including elite models like the SLP99 and EL297 series, this OEM concentric termination kit utilizes a dual pipe design to isolate flue gases from fresh combustion air.