Vaillant VR 91 Wired Digital Programmable Room Thermostat 0020171334
Thermostat 0020171334. Part No: - 0020171334. Room Thermostat 0020171334. Vaillant VR 91 Wired Digital Programmable Room. Genuine Vaillant Part Not a cheap Chinese make. Vaillant VR 91 Wired Digital Programmable.