Lusso PP retractable stairs have a sandwiched sheet-metal lid, which is built into the ceiling. The lid is lined with a thermal and fire-resistant insert. The fire-resistance properties are certified by the Centre for Civil Engineering, Plc. Zlín. The lid opening system with dimensions of l ≥ = 1 000 mm is equipped with a braking mechanism to prevent rapid opening.
|Lid:||sandwiched: the wooden frame is lined with insulation sheathed in galvanized sheet metal. The visible part is painted white and covered with a protective film.|
|Insulation:||yes, k = 1.92 W/m2.K|
|Fire resistance:||yes, 60 minutes - EI120/EI260/EW60|
|Frame colour:||white RAL|
|The colour of the steps:||black RAL + galvanized|