A Heating, Ventilation, and Air Conditioning (HVAC) controller includes a first cover secured to a second cover, with HVAC components housed by the first cover and the second cover. The first cover may include two or more latches to secure the first cover to the second cover. In some cases, the second cover may include two or more latch receivers each configured to receive one of the two or more latches of the first cover as the first cover and the second cover are brought together. The first and second covers may include one or more guide features. The guide features may be configured to guide movement of the first cover relative to the second cover as the first cover and the second cover are brought together.