Profile: Percy Lane Products Ltd. specializes in providing windows, windscreens and louvers for all classes of mechanically propelled vehicles & caravans. Our manual doors can be used in many varying applications such as emergency exit locations, or as a simple hinged door. The hinges that mount the door leaf to the cassette outer frame are purpose designed and fully adjustable to accommodate build tolerances, and are easily maintained on the vehicle. The base construction of the door leaf is purpose designed aluminum profiles, fully welded to create a rigid structure either flat, cranked or profiled to match the vehicle's body condition.