A.O. Smith 100110849 Upper Probe For BCG3 65T300, 85T360, 100T390 SBD 65-305, 85-365, 100-390 and BTR-305 Commercial Gas Boilers, 3/4 in. NPT x 5-7/16 in. L
A.O. Smith 100110850 Lower Probe For BCG3 65T300, 85T360, 100T390 SBD 65-305, 85-365, 100-390 and BTR-305 Commercial Gas Boilers, 3/4 in. NPT x 5-7/16 in. L