Complete invisibility, thermal insulation, frontal inspection.

SEI SYSTEM prefabricated roller blind box with frontal opening. It is made of expanded polystyrene externally reinforced with mortar, sand and additivated cement (o: cement with additives). Fibre cement frontal panel and XPS with min. 4 cm. thickness. XPS bottom panel to be plastered. Locking screws. Thermal and wind resistance ensured by a brush seal and a balloon gasket close to frontal panels. The vertical walls (internal and external) are available in thicknesses of 3 to 8 cm. The box is provided with accessories: ABS extremity flanks geared for various reversible engine operations, external mounting brackets for wall anchoring, supports for the roller made of nylon bushings and/or galvanized bearings, galvanized octagonal roller and ABS cap and pulley.