A 90 degrees operable skylight lifts the glazed unit or “lid" 90 degrees from the plane of the curb. This type of skylight has different applications and specific functions, one being ventilation. A typical ridge vent or standard operable skylight only opens a few degrees, allowing small amounts of ventilation. The 90 degrees unit fully opens, allowing optimum amounts of ventilation into a space. Daylight is a desired effect of all skylights, and the 90 degrees series allows ample levels of daylight.
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