System specifically recommended for raked and horizontal skylights. Rollbox 885/3 gear operation: 160 cm W max. - 160 cm H max; Rollbox 885/4 motor operation: 160 cm W max. - 300 cm H max. The comparable tension on both ends of the fabric is guaranteed by a double spring traction system. Vertical, horizontal and sloping built-in or wall installation. The aluminium side guides are available in a width of 80 mm. Surface finish: aluminium boxes and base RAL 9016 white, RAL 9005 black; silver anodised - bronze anodised. Accessories: grey - white - black - brown.