This insulated roof access 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. DRL roof access skylight is an energy-efficient lid 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