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Universal GRAY Temperature Sensor Thermowell Mount by Balboa designed for 3/8" sensor bulbs. Compatible with temperature sensors from Balboa, Gecko, Hydro Quip, and other manufacturers. Features rubber grommet on back nut for secure installation. Requires 1" mounting hole in spa wall.
| Thermowell Type | Thru-Wall |
| Sensing Bulb Size | 3/8" |
| Thru-Wall Hole Size | 1" |
HTPOFAmerica
Heyco
Vita Spas
HydroAir/Balboa
