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2. High-speed door - Wikipedia

   en.wikipedia.org/wiki/High-speed_door

   In North America, the Door and Access Systems Manufacturing Association (DASMA) defines high-performance doors as non-residential, powered doors, characterized by rolling, folding, sliding or swinging action, that are either high-cycle (minimum 100 cycles/day) or high-speed (minimum 20 inches(508 mm)/second), and two out of three of the ...

3. Roller shutter - Wikipedia

   en.wikipedia.org/wiki/Roller_shutter

   Roll shutters on windows. Security roller shutters in a dead mall. A roller shutter, security shutter, coiling door, roller door or sectional overhead door is a specialized type of door or window shutter consisting of multiple horizontal slats, bars, or web systems interconnected through hinges. The mechanism involves lifting the door to open ...

4. Sliding door - Wikipedia

   en.wikipedia.org/wiki/Sliding_door

   Sliding doors are commonly found as store, hotel, and office entrances, used in elevators, and used as patio doors, closet doors and room dividers. [7] Sliding doors are also used in transportation, such as in vans and both overground and underground trains. Volkswagen used these doors in the Volkswagen Fridolin produced between 1964 and 1974.

5. Garage door - Wikipedia

   en.wikipedia.org/wiki/Garage_door

   A typical single-car garage roller door has a preloaded spring inside the rolling mechanism. The spring reduces the effort required to open the door. Oversized roller doors in commercial premises are not sprung (except in the US), and a manual pulley and chain system or a geared motor is used to raise and lower (roll up and roll down) the door.

6. Asphalt roll roofing - Wikipedia

   en.wikipedia.org/wiki/Asphalt_roll_roofing

   Asphalt roll roofing or membrane is a roofing material commonly used for buildings that feature a low sloped roof pitch in North America. The material is based on the same materials used in asphalt shingles ; an organic felt or fiberglass mat, saturated with asphalt , and faced with granular stone aggregate.

7. Opendoor - Wikipedia

   en.wikipedia.org/wiki/Opendoor

   Opendoor Technologies Inc. is an online company that buys and sells residential real estate. Headquartered in San Francisco, it makes instant cash offers on homes through an online process, makes repairs on the properties it purchases and relists them for sale. [2]