Is the overhead door distinguished by the wood covering of the outer frame metal parts (jambs and head).
A layer of high density selfextinguishing polystyrene is also inserted between the external matchboarding and the internal panel that guarantee an excellent heat and sound insulation. The door frame is made with an exclusive reinforced steel profile designed to house the rubber sealing strip. A pratical system of counterweights is inserted into the galvanised steel side uprights for easy, effortless opening. The metal parts are galvanised and standard painted in a dark brown colour or ral-colours with stove-enamelled polyester powder finish for maximum weatherproofing the vertical panelling or the special aesthetics of the door are done with various types of wood, all guaranteed by a long-term seasoning and a specific treatment. The wood is treated with fillers and resin-based paint varnishes in aqueous dispersion, thereby ensuring absolute non-toxicity for the indoor environment in order to safeguard the inhabitants. The NORMAL PLUS overhead door may be supplied with pedestrian door, glazed areas and, for even easier opening, with an electronic motor. NORMAL PLUS comes supplied complete with Yale lock with handle, anti-fall system against the accidental breaking of the cables, anchoring rag bolts; is delivered ready assembled for easy fitting and packed with polyethylene sheets.
Safety according to CE marking
Prestige overhead doors are CE certified and they are equipped with the following safety systems:
Anti-fall system with double certified cable: breaks cable? The second intervenes. Breaks the second cable? The door is locked in the position in which it is, thanks to the parachute of the series. Since 1998 it has never occurred the break of the both certified cables.
Limitation of forces: an electronic system adjusts the engine power, maintaining the impact forces within the parameters of safety.
Mechanical safety rib: provides continuos self-test excluding any possibility of uncontrolled failure.
Protection of lever arms: safety and beauty. The levers are designed and positioned as the law requires, are coated to balance into the overhead door.
Durability and operability: the overhead doors by De Nardi, were tested for over 20.000 opening and closing cycles without ever needing any extraordinary maintenance and/or the replacement of components.
Wind resistance: certified class 2.
1 Anti-fall system with double certified cable
2 Limitation of the forces
3 Mechanical safety edge
4 Levers protection