Metal Thermostat Guards: Constructed of 18-2 gauge steel and are finished with a durable baked enamel.
Plastic Thermostat Guards: Constructed of hi-impact plastic, and are designed for use in offices, restaurants, or other businesses where lightweight, medium protection is required to avoid tampering.
Ring base is for installation over existing thermostats. Solid base is for new installations (added strength). All models furnished with locking key and mounting hardware. Thermostat guards can be installed in a vertical or horizontal position.

Specifications:

Solid Base: 3 7/8" H x 3 1/2" W x 2 1/2" D

Applications:

General ControlsT199
HoneywellT26, T87, TS86, T832, T853, TP910, TP970, TP971, TP972, PT973
RobertshawTH200, TX400, TA500, TH500, TX550, TP2210, TP2212, TP2214, TP2216, TP2218
PowersTH180 Series
JohnsonT4002, T4003, T4502