This insulated roof access skylight has an extra utility feature which provides safe and convenient access to the roof. The uniquely designed hinges and opening system allow the sash to easily open up to 80°. Gas springs operate the sash and keep it stable while open to prevent accidental closure. DRF roof access skylight is an energy-efficient, triple glazed unit with an anti-theft inner pane Frame is made up of multi-chamber PVC profiles filled with insulation material Can be mounted on an additional XRD base with a height of 5-7/8-in. (15 cm) for installation on green or living roofs DRF access roof skylight is designed for pitches between 2° and 15° Structure of the roof access skylight allows for installation of internal and external accessories