Peerless PRG Series PRG-EXB-W 12.6-Inch to 20.6-Inch Adjustable Projector Ceiling/Wall Mount Kit (black)-12.6 Inch to 20.6 Inch refers to the length of the column Continuous channel design for uninterrupted drop length or wall extension adjustments; Spider Universal Adapter Plate extends up to 17.63" (448 mm) to fit most projector models; Safety catch designed into extension to ensure user and equipment safety; Mounts to ceiling or wall (according to model) with included wall mount interface; 12.68"-20.67" (322-525 mm); 13.74" ? 21.73" (349-552 mm); Pre-assembled design reduces installation time; PRG-EXB models (ceiling/wall); Adjustable extension length For multimedia projectors up to 50 lb (22 kg); Color Black; Limited 5-year warranty Specifications Tilt Internal cable management within channels for clean, clutter-free appearance Includes PRG Precision Gear Projector Mount that provides pin-point image alignment with the unique gearing system by simply adjusting two knobs