Peerless PRG Series PRG-EXB-W Adjustable Projector Ceiling/Wall Mount Kit for Projectors Ceiling or Wall mountable (except for EXC, which is a ceiling-only kit) Multiple adjustment lengths Internal cable management within extension channels for clean, clutter-free appearance Safety catch designed into extension channels to ensure user and equipment safety Extends 12.68-inch to 20.67-inch from the ceiling or 13.74-inch to 21.73-inch off the wall Includes PRGPrecision Gear Projector Mount Continuous channel design for uninterrupted drop length or wall extension adjustments Safety catch on extension ensures user and equipment safety Internal cable management for clean, clutter-free appearance