Lennox 25W71 Gasket 320788-703 Dual Power Flexibility: Reliable operation

Dual Power Flexibility: Reliable operation via C-wire hardwiring or dual-battery backup for installations where a common wire is unavailable

you can typically "size up" the amperage rating of a contactor

and 48HJ series rooftop units

Regular maintenance involves inspecting the strainer screen at least once per year or when pressure drops indicate scaling or fouling

leak-proof joint when brazed according to industry standards

Lennox 25W71 Gasket 320788-703 Dual Power Flexibility: Reliable operationThe Lennox 25W71 Gasket is a critical OEM replacement part designed specifically for sealing the collector box cover in high efficiency Lennox furnaces. As a veteran tech knows, a compromised seal at the secondary heat exchanger leads to pressure switch trips and dangerous flue gas leakage. This precision engineered furnace collector box gasket (also indexed under 100742 01) ensures an airtight, negative pressure environment required for the draft