Clear Thermostat-Cover

Ultra-clear chemical and UV-resistant acrylic resin cover and base resist yellowing. Secure, tumbler type key lock; key removable only in locked position. Double-wall barrier in ring base blocks thermostat tampering tools, yet allows air circulation. Ring base mounts directly over existing thermostat; no removal required. Meets or exceeds UL pry test and impact test standards. All covers are keyed alike.No. CG511A1000: Fits most small and medium size thermostats, 6-1/2" H. x 7-1/2" W. x 2-15/16" D.No. CG512A1009: Fits most medium and large size thermostats, 7-1/4" H. x 9-3/4" W. x 3-3/8" D.