Industrial & Acoustic doors

Hingeless sectional door ProIso

  • Hingeless sectional door with steel or aluminium panels.
  • Individually available for delivery with light elements e. g. out of fibre glass, sheet glass, acrylic or polycarbonate.
  • Planking of the system on customer request, e.g. suitable to the facade.

Door Leaf:

The hingeless door leaf consists of foamed steel or aluminium panels, is stucco patterned, 40 mm thick and 500, respectively 625 mm high. The door leaf is individually manufactured, extra light-elements can be added, or the heights of the separate sections can be adjusted.

The extraordinary feature of the hingeless sectional door is the completely flush door leaf on the in- and outside, since no fittings are necessary for the connection of the sections with each other. There are no fitted lateral hinges, middle hinges, floor or toproll brackets on the door leaf. Only at a width exceeding 3100 mm small load-relieving bands are mounted on the inside of the door leaf in order to maintain the distance between the sections during redirection.

The castors are inserted in the front side of the sections and are not visible in mounted condition.The advantage of this innovative construction is the invisible rotatable butt straps which are responsible for the linking of the sections. The upper and lower profiles of the sections, which consist of aluminium, are designed as to intertwine, thus ensuring a high stability of the door leaf. The floor and lintel sealing consist of EPDM profiles with a lip seal.


The standard coating is RAL 9002 or RAL 9006. The upper and lower end profile of the panel sections consists of aluminium, finish sheer aluminium. The door leaf can be painted in RAL to choice if so required.


Standard fittings for a lintel height of at least 470 mm. Further types of fittings such as low-lintel redirection 350 mm, high lift fitting > 470 mm, fittings for slanted roofs or vertical fittings are possible.

Guide Rails:

The vertical guide rails come with an inner and outer profile seal up to the lintel, a round anti-trap protection as well as an integrated track cable duct.

Supplementary Equipment:

  • Panel sections with incised square or oval windows
  • Frame bar sections with different fillings (punched plate, sheet aluminium, wave grid)
  • Light sections as aluminium frame sections (up to 4000 mm possible without vertical bars)
  • Incised ventilation slits
  • Body soundproofing of the guide rails
  • Safety features (light barrier, flash light and/or omnidirectional light)
  • Impulse transmitter (push button, key switch, pull switch, code switch, radar detector)
  • Radio control
  • Light barrier
  • Induction loop
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