Universal Design with Four Adjustable Arms: The arms are fully adjustable to fit virtually any projector. The arms are also removable for projectors that have less than 4 mounting points. Vaulted Ceiling Plate: The APMEW is designed so it may be used with vaulted ceilings 7" Low Profile and Optional Adjustable Extension Pole: The APMEW is ideal for low profile mounting as well as setups that require an extension pole. The profile is 7" without the extension. With the extension, the profile has an adjustable range of 18.75-27". Safety Cable: Attach the projector to the mount with the metal tether for added security during installation. The cable may also be used as an extra element of security once the projector is mounted. Cable Management: The center of the ceiling plate is stamped out to allow cables to pass through for a clean and sleek cable management system.