NATURAL GAS WATER HEATER THERMOSTAT (Robertshaw)

No pilot adjustment key. 4" w.c. natural gas. 160°F. 48,000 BTU. 1-3/8" shank. 1/2" FNPT inlet a 1/2" Inv. FL outlet. Includes 3/8" NPT reducer bushing. Model #220RTSP. MFG #110-202. WSL