Potterton Thermostat Knob 225251 This is A Large Grey Knob /8225251
This is used on the Potterton Profile 40EL to 80 EL. Neatheat Proile 30E to 80E. Also
Profile prime 30E to 100E. Prima C & B 30 to 60 Range. Prima 30F to 100F
Ref: 225251
