An anti-theft enclosure for protecting an outdoor air conditioning (A/C) unit is made up of an open framework of structural members which surround and protect the A/C unit. Individual steel panels are assembled to form a series of upstanding walls which are covered by a top panels and which together define the quasi-enclosed area surrounding the A/C unit. The tubing which makes up the steel panels is spaced to allow access to the enclosed area by a worker needing to access the A/C unit. The steel panels are joined with connecting and mating elements which facilitate easy and quick disassembling of the enclosure. The upright panels also have adjustable panel legs which can be extended and cemented into the ground for added stability and security

Lock boxes may be used to protect a building controller from tampering. In some cases, a lock box may include a back plate that is configured to be mounted to a wall or a junction box and a front cover that may be secured to the back plate and locked in place. In some cases, the back plate may be configured to help secure a building controller thereto. In some cases, the back plate may be configured to secure a wall mountable connector to which the building controller may be secured. In some instances, the back plate may include mounting features that can engage corresponding mounting features of the wall mountable connector in order to secure the wall mountable connector to the back plate of the lock box.

A box which is expandable vertically and horizontally is disclosed. The box can be expanded both vertically and horizontally simultaneously, or in only one of these directions. This is accomplished by pulling/pushing opposite sides further/closer to each other. Rails which at least partially extend between respective opposite sides allow such an expansion/or contraction, the rails, in embodiments, having a pin of one section of the box held within a slot of an adjacent section of the box. The box, in embodiments, is made up of four separate pieces, each being one quadrant (top & left, top & right, bottom & left, bottom & right) of the box. Such a box can be expanded/collapsed to fit within a window and hold an air conditioner there-in.

The present utility model relates to an anti-theft device having an enclosed state and a folded state, and comprising at least three side surrounding frames capable of stretching out and drawing back along a width direction, the right edge of a side surrounding frame being rotatably connected to the left edge of a next side surrounding frame, and the left edge of the first side surrounding frame and the right edge of the last side surrounding frame being free edges, wherein when the anti-theft device is in the enclosed state, the left edge of the first side surrounding frame and the right edge of the last side surrounding frame are locked together and a closed area is formed by the side surrounding frames; when the anti-theft device is in the folded state, the at least three side surrounding frames stack on each other. By rotatably connecting these side surrounding frames, a then by stretching out and enclosing these side surrounding frames when in use, and by folding them and drawing them in when not in use, the present utility model is more convenient to use than the existing anti-theft devices, and has a very simple structure.