Keeps blinds clean and works every time they are raised or lower. it is compatible with manually or motorized roller blinds. it is quick and easy to install, and can be carried out from inside the home without risk. the kit includes everything needed for installation in aluminum or pvc windows with a recessed or concealed frame in the exterior wall or facade: 2 side brackets for direct wall installation, screws, dowel, central bracket and supplements, 2 bars 75cm, 1 brush 150cm. it also improves energy efficiency and prevents insects and bats from entrying into the shutter drum