The THIEMAN TT Series is completely assembled into one compact unit – ready to run. Simply bolt and/or weld it to the truck and connect the battery cable. Installation is fast and easy and years from now it will be just as simple to remount the TT-15 model on a new truck. The lifting mechanism is completely enclosed for a neat appearance and protection from the elements. A two piece bumper, for use with frame attached receivers, is standard on the TT15. The THIEMAN TT’s overall design makes it the toughest liftgate available in its class.