Thermostat Honeywell T6861H2WG-M

Honeywell T6861H2WG-M ? Protect again tampering, damage and unauthorized adjustment of thermostat settings. ? Fits RTH8xxxx, RTH7xxxx, RTH6xxxx, RTH5xxxx, CT3x Family Thermostats and other models measuring 6 1/16 W x 5 1/16 H x 2 5/8 D inches or smaller ?Actual size of thermostat guard: 6. 5" H x 7. 5" W x 3" D. ?Key lock with inner shelf to prevent tampering. ?Clear plastic cover that resists yellowing.