Maximum size is: 592” x 280” (6-, 7- or 8-paneled door)
Maximum height for the more narrow doors: 320”. (Higher ones will be special projects.)

• Structure: thermally insulated, sandwich-structured folding doors
• Cladding: heat galvanized sheet steel, minimum thickness of .02” (0.5 mm), painted by heat cured powder coating
• Insulation thickness: 2” or 2 ½”
• Colour: from RR colour chart http://www.rakennusmestarit.com/varikartta.htm, (or, in special cases, from the RAL color chart, http://www.ralcolor.com/)
• Water resistance classification: 3 EN 12489 ja EN12425
• Wind pressure classification: 4 (up to a height of 13”) EN 12444 ja EN 12424
• Air permeability classification: 4 (determined by door size) EN 12427 ja EN 12426
• Weather-stripping: the weather-stripping, made of EPDM rubber, is capable of resisting harsh conditions. The door panels have 8-fold male-female weather-stripping between all adjacent panels, and the door bottom has a double door-sweep.
• Hinges: elevating steel hinges with ball bearings
• Windows: Double pane selective thermal glass. Any windows mounted less than 28” above the ground are of tempered glass.
• Doors mounted to structure with mounting devices that are corrosion-proof to classification C4 [which, according to ISO 9223 keeps hinges rust free for 20-40 yrs.]
• Opening mechanisms:
  • Manually opened doors: the door has a handle on its inside surface that allows its opening or closing.
  • Machine opening: a motor or draw-chain device is mounted to a door panel.
• Additional specification: Fire resistance classification of EI30
  • Maximum size 16.5’ x 16.5’
  • Windows are not available on the doors with fire resistance classifications.
  • The appearance is the same as a normal folding door.
  • The fire resistant doors are heavier, therefore the mounting surface on the header face must always be at least 8” wide.
  • The available opening machinery consists of a regulations consistent draw-chain using device.

Maximum size: 300” x 240”

• Structure: folding door having glass panels inside aluminum frames
• Thickness: aluminum frame thickness is 2”
• Weather-stripping: the weather-stripping is of harsh conditions bearing EPDM rubber. The panels have 2-fold weather-stripping between them, and there is a double door-sweep weather strip at the bottom of the door.
• Hinges: elevating steel hinges with ball bearings
• Windows: double pane selective thermal glass. Also available with triple pane glass. The windows less than 28” above the ground are of tempered glass.
• Kickguard of rust proof steel
• Opening mechanisms:
  • Manually opened doors: the door has a handle on its inside surface that allows its opening or closing.
  • Machine opening: a motor or draw-chain device is mounted to a door panel.

Suitable for the smaller and mid-sized folding doors with max. 3 or 4 leaves (smaller than 16,5′ x 16,5′), as at shops, smaller fire stations and barns.

• Motor: 24V motor operates with single phase electric current
• Safety equipment:
  • An electric eye system in line with the door prevents the closing of the door if there is some physical object between the detectors.
  • The door opening machinery includes a motor overload activated shut-off switch, which overload would be caused, for example, by a physical object preventing the opening or closing of the door. This prevents a breakdown of the machinery itself.
  • Folding doors that include a built-in entry door have a disconnecting switch that prevents the opening of the folding door when the entry door through it is open.
  • Three push-button switches, Open-Stop-Close, beside the door opening.
  • The door is also operable manually during power outages.
• Control devices for the door opening machinery:
  • Push-button switch box (Open – Stop – Close) mounted on wall
  • Remote control switch
  • The door opening machinery can be hooked up to the building’s physical access system
• Additional available features:
  • Canceling electric eyes (the door automatically closes once a vehicle has crossed the beam of light to the electric eye)
  • Radar utilizing door opening systems
  • Control through VIRVE signals
  • Magnetic loop door opener (installed in customer prepared conduit grooves)

Suitable for big doors (bigger than 16,5′ x 16,5′) that have 4 to 6 leaves and are opened very frequently, such as, for example, at fire stations, carwashes and factories. 

• A separate rail for mounting the door opening machinery will be mounted above the door. The machinery will then be installed upon this rail.
• This machinery will be operated with normal grid electric current (3-phase current)
• Safety equipment:
  • An electric eye system in line with the door prevents the closing of the door if there is some physical object between the detectors.
  • The door edges that close against the building structure contain sensors.
  • Folding doors that include an entry door have a disconnecting switch which prevents the opening of the folding door when the entry door through it is open.
  • Three push-button switch box, Open-Stop-Close, beside the door opening.
  • The door is also operable manually during power outages.
• Control devices for the door opening machinery:
  • Push-button switches (Open – Stop – Close) in switch box.
  • Remote control switch
  • The door opening machinery can be hooked up to the building’s physical access system
• Additional available features:
  • Canceling electric eyes (the door automatically closes once a vehicle has crossed the beam of light to the electric eye)
  • Radar utilizing door opening systems
  • Control through VIRVE signals
  • Magnetic loop door opener (installed in customer prepared conduit grooves)

The opening for an entry door has a maximum width of 56″. The opening for the double door has a maximum width of 106”. If a wider opening is needed, then a folding door will be installed.

• Door cladding is of heat galvanized sheet steel, painted by heat cured powder coating.
• The door core is of insulating material that will not absorb water
• The door is pre-hung inside a frame of galvanized steel.
• The door assembly includes either a steel threshold or a double door-sweep on the bottom of the door.

• The door has either a threshold of ¾” rustproof steel or the door bottom has a door-sweep for weather-stripping. The interior doors do not necessarily need any threshold at all.
• The steel surface has been painted with primer and a finishing coat of paint.
• Doors are available with these fire resistance classifications
  • Ei30
  • EI60
  • Ei90
  • EI120