This kit combines the precision adjustment and low profile design of the PRS-series projector mount line with a convenient variable-adjustable square column extension kit. Each kit includes the ceiling/mount, extension column and mounting hardware for either ceiling or wall applications. You also get color-coordinated wire slot covers for neat and clean installations. Adjustable length range 8.7in. - 12.8in... Peerless PRS-EXA-S Adjustable Projector Ceiling / Wall Mount Kit is one of many available through Office Depot. Made by Peerless-AV.