Machine Tool & Fab Corp. manufactures aviation and industrial fabric doors. Para-Port Doors offer significant cost, maintenance and safety advantages over conventional sliding and overhead doors. They can be readily installed on new installations or as a replacement for existing doors. These are custom made doors that can span up to an amazing 145 feet wide and 50 feet tall. Para-Port Doors are a fabric bottom-roll door that resembles an upside-down window shade where the roll is at the bottom. They are driven via one or two electric motors, depending on the size of the door, which in turn drives a gearbox mechanism that rolls the fabric door up from the bottom, exposing the door opening as the door is rolled up. The doors offer cost savings, heat retention, cold and hot weather operation, light infiltration, maintenance and safety features. For more information call (419) 435-7676 or visit www.ParaPortDoor.com or www.MachineToolAnd Fab.com.