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: Color: Clear, Width: 7-1/2″, Height: 6-1/2″, Depth: 2-15/16″, Pkg Qty: 1, Package Type: Card No. CG512A1009: Color: Clear, Width: 9-3/4″, Height: 7-1/4″, Depth: 3-3/8″, Pkg Qty: 1, Package Type: Card
