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

the PB00106 offers precise alignment with the burner bracket to prevent delayed ignition or nuisance lockouts

The RIBU2C features NEMA 1 rated housing with 10-amp resistive contacts

the KT10542 supports the precise air-to-gas ratio monitoring required for negative pressure valves designated with a "-2" suffix

and 3B electrode fittings

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