Lennox 51W91 Pressure Switch

0.95" W.C.

Other Part # 51W9101, 56M05, 101256-03.

Series G43, G51, & G61

G43UF-24B-070-01, G43UF-24B-070-03, G43UF-24B-070-04, G43UF-24B-070-05, G61MP-36B-070-01, G61MP-36B-070-06, G61MP-36B-070-07, G61MPV-36B-045-01, G61MPV-36B-045-10, G43UF-24B-070-06, G43UF-24B-070-07, G43UF-24B-070-08, G43UF-36B-070-01, G43UF-36B-070-08, G43UF-36B-070-09, G51MP-24B-045-03, G51MP-24B-045-06, G51MP-36B-045-01, G51MP-36B-070-07, G61NP-36B-045-07.