The PPA 300 projector anti-theft housing is specially designed to prevent or delay theft of mounted projectors and fits on our modular ceiling supports and extention tubes. The PPA 300 projector anti-theft housing offers maximum prevention to projectors in schools and public rooms. The housings are designed in such a way that servicing to the projetcor is quick and easy. The large ventilation openings offer sufficient cooling. The front is closed with special anti-theft screws and security strips which can be locked with a padlock (not included) and/or a bolt-nut, double security. After installing the projector to the ceiling it can be aligned. Because of the lateral (horizontal) shift option also the lens-screen offset can be easily set. After final alignment the housing will be slided over the projector and will be closed. For customer service, Visual Reality, Inc. is your official Vogel"s distributor and we can answer all of your questions. To contact us call 804-364-3334 or send us an e-mail at sales@visualrealityinc.net.