A Thru Wall Thermowell is a small fitting that goes through your spa shell to help measure the temperature of your water. Inserted in the thermowell is a temperature sensor probe that connects to a Topside Command Center or a Spa Controller. This is a dry thermowell that fits a 5/16 inch temperature sensor probe, and keeps it dry.
SpaGuts P/N: 25-850-4510
Thru Wall Thermowells are a more precise way of measuring the temperature of the water in the spa than measuring the water temperature flowing through a plumbing fitting or a heater. Keep in mind that SpaGuts CS-Series temperature sensor probes must not be in direct water contact. This dry thermowell keeps the temperature sensor probe dry.
Dimensions (Approx): 2.74 inches long x 1.81 inches lip diameter. Requires a 1-1/8 inch round hole cut out for installation.
This item includes the drywell, securing nut, wall gasket, and split rubber grommet.
This thermowell is also a replacement option for the following thermowell part numbers: 990451-000, TW312CLB, 4-30-0022, 400-4360, 990448-003, 990459-000, 47-439-1001, 47-439-1003, 990408-003, 47-439-1004, 990401-0031
This item comes with a 90 day limited warranty, and is NON-Returnable.