This skylight is equipped with a spindle that allows you to open and close the skylight at a certain extent. We can opperate this system throughout an aluminium crank handle. Besides, the spindle allows us to fully open the skylight and therefore use this as an access hatches.
This system is recommended to ceiling distances below 3.5m. This is the best value choice for those who wants some ventilation beyond natural sunlight. Skylights with dimensions above 160x160cm. are mounted with double spindle systems.