External shutters of PVC provide a high level of heat and sound insulation to SSK4 and also have a security feature. Possibility of
upper mounting external roller shutter GEALAN “Plus” is available in wide range of colors in combination with insect screening. The
housing of the blind can plastering and from the outside and from the inside to be invisible It is equipped with inspection opening
on the inside, which allows the service to be performed without disassembly. The inner wall housing is insulated in order to break
the thermal bridge.