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2. Skylight - Wikipedia

   en.wikipedia.org/wiki/Skylight

   A retractable skylight rolls (on a set of tracks) off the frame, so that the interior of the facility is entirely open to the outdoors, i.e., not impeded by a hinged skylight. The terms retractable skylight and retractable roof are often used interchangeably, though skylight implies a degree of transparency. Tubular daylight device

3. Retractable roof - Wikipedia

   en.wikipedia.org/wiki/Retractable_roof

   Retractable roof. A retractable roof is a roof system designed to roll back the roof of a structure so that the interior of the facility is open to the outdoors. [1] Retractable roofs are sometimes referred to as operable roofs or retractable skylights. The term operable skylight, while quite similar, refers to a skylight that opens on a hinge ...

4. Uni-Systems - Wikipedia

   en.wikipedia.org/wiki/Uni-Systems

   The retractable skylight over the 470-ft-long retail concourse of Salt Lake City's City Creek Mall consists of two independent sections, one 230 ft and the other 240 ft long and each 58 ft wide. The retractable motion was achieved through three opposing glass-covered arched panels that cantilever across the 55.5-ft-wide concourse.

5. Passive solar building design - Wikipedia

   en.wikipedia.org/wiki/Passive_solar_building_design

   In passive solar building design, windows, walls, and floors are made to collect, store, reflect, and distribute solar energy, in the form of heat in the winter and reject solar heat in the summer. This is called passive solar design because, unlike active solar heating systems, it does not involve the use of mechanical and electrical devices.

6. VELUX - Wikipedia

   en.wikipedia.org/wiki/VELUX

   A pair of VELUX skylights, GGL-7 center-pivot roof window (forward) and FS2 fixed Skylight (above) installed in a cathedral ceiling. VELUX has 21 production sites in 12 countries and sales companies in 37 countries. [4] The VELUX Group employs 11,900 employees worldwide.

7. Willis Tower - Wikipedia

   en.wikipedia.org/wiki/Willis_Tower

   The Willis Tower, originally and still commonly referred to as the Sears Tower, is a 110- story, 1,451-foot (442.3 m) skyscraper in the Loop community area of Chicago in Illinois, United States. Designed by architect Bruce Graham and engineer Fazlur Rahman Khan of Skidmore, Owings & Merrill (SOM), it opened in 1973 as the world's tallest ...