PRVF prefabricated upstands with ONDA EUROPA profile step 177/51 are realised in reinforced polyesther resin with fibre glass.

Shockproof and weatherproof with stable dimensions, standard height from about 20 - 25 cm. They are insulated with polyurethanic expanded self-extinguishing panel according to  UNI 8457, density 33+/-1 kg/mc, with condensation gathering gutter. 

Internal side is white varnished for a better light output, while the external side is rough finished with a layer of waterproofing solution.

Easy to lay down on ondulated roof covers they also may have provision for opening devices.