Honeywell #TG511A1000, Medium Universal Thermostat Guard - Clear Cover ** Used With: TH3000 Series, TH4000 Series, TH5000 Series, TH6000 Series, TH8000 Series, Others Thermostats of Similar Size

Overview:
Enclose and protect wall thermostats against tampering, damage and unauthorized adjustment of thermostat settings.

Features:
Unique double-wall construction provides extra measure of tamper-resistance
Used in both new and existing applications
Tamper-resistant lock; key cannot be removed unless in locked position
All models mount vertically or horizontally on wall or exposed junction box
Vents in guard base allow airflow for optimum thermostat performance