High Impact Polymer (Plastic) Construction 7.80″ x 5.00″ x 3.35″ size is good for medium sized thermostats Solid base for new installations to mount the thermostat on the base Ring base for mounting around an existing thermostat Metal lock set with 2 brass keys for durability The TP02CL thermostat guard is designed to protect your thermostat from tampering hands. Available in a variety of materials for different industrial, office, and hospitality environments. TP02CL thermostat guard can be mounted horizontally or vertically. Our guards are tamper proof, & are available with a chrome plated lock & two brass keys for added security. Product Specifications High Impact Polymer (Plastic) Construction Size: 7.80″ x 5.00″ x 3.35″ Includes: Ring base for mounting around an existing thermostat Solid base for new installations to mount the thermostat on the base Metal lock set with 2 brass keys for durability We take pride in quality control & reliable operation of our products. Tempro products meet NEMA, UL, cUL & NEC 457 Ag-ratings and are manufactured with the highest quality materials and production standards to ensure rugged dependability and attractive. The thermostat guard uses a high impact polymeric construction tamper resistant design that has been tested to ensure clear airflow.