Toshi-twindoor, germany manufactures industrial sectional doors for factory/ware house use. These industrial sectional doors are smooth, silent in operation and require minimal maintenance. Industrial doors are barriers that are useful for separating environments of facility or allow passage through when needed. Sectional doors can open vertically upwards and thereby provide space. These industrial sectional doors offer benefits like panel-high quality industrial panel, frame and hardware; nema 1type electrical box construction, heavy-duty 0.5 mm steel frame with durable baked-on powder coating; first stage heavy duty 4l v-belt drive reduction; second stage and third stage #48 chain; standard heavy-duty solenoid actuated brake; operator is pre-wired to accept sensing device, photoelectric control, radio controls and most types of access control equipment; adjustable friction clutch to protect against major damage to door and operator should the door meet an obstruction; push button control box-3-button station for open/close/stop functions is standard for all operators [controls with one, two and three buttons]; external radio control terminal-external terminals for quick, convenient connections of radio controls; and rolling door interlock switch interlock switch disables the operator control circuit when manual door lock is engaged preventing damage to door and operator. The company supplies these industrial doors with control accessories and options like sensing edge to sense an obstruction and signal door operator to stop or reverse as desired; cps commercial protector system an inexpensive "non-contact" photo safety sensor to sense signal and obstruction door operator to reverse or open; radio control: universal transmitters and receivers to signal the operator to open and/or close door; and emergency egress device.