This type is suitable for relatively small openings whereby a mechanical or electrical mechanism is not necessary to operate the Roller shutter door. Lifting handles are fitted to the T-bar to open and close these doors. Helical coiled springs counterbalance the mass of the door curtain. Push-up doors are suitable for openings not exceeding 2750mm in height and 3000mm in width.

Doors of up to 24 square meters are operated by an endless-chain chain wheel through a reduction spurgear fitted to the helical coil spring barrel.

By means of a preference, a gearbox can be fitted in place of a chain operator. In the event of doors exceeding the 24 square meter range, cast-iron gears are commonly used. A bought out precision reduction gearbox is a recommended advantage.