KOMBO retractable stairs have a sandwiched sheet-metal lid, which is built into the ceiling. The lid is lined with thermal and fire-resistant insulation. The gap between the lid and frame is sealed with fire-resistant foam tape. The frame’s construction is fitted with a folding ladder attached to the lid. The whole space of the stairs is enclosed from above by an insulating lid.
|Lid:||a wooden ram treated with a fungucidal solution to rid of mold, fungus and mushrooms; the insert is enclosed by galvanized sheet metal; while the ceiling part is painted white and covered with a protective film|
|Frame colour:||white RAL|
|The colour of the steps:||black RAL + galvanized|