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  2. 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 ...

  3. High-speed door - Wikipedia

    en.wikipedia.org/wiki/High-speed_door

    High Speed Doors are an evolution of the traditional roller shutter door (hence the alternative name they are often given of Rapid Roll Doors). They are primarily designed to give higher operating speeds, improved sealing and sustain a higher number of opening & closing cycles than traditional roller shutters, without compromising reliability ...

  4. .dwg - Wikipedia

    en.wikipedia.org/wiki/.dwg

    DWG is merely descriptive of applicant's goods under Section 2(e)(1) of the Trademark Act for two reasons: (1) DWG is a recognized abbreviation for "drawing," and (2) .dwg is a file format used for computer-aided design (CAD) drawings made both with applicant's CAD software and others' CAD software. Autodesk appealed the decision.

  5. Door - Wikipedia

    en.wikipedia.org/wiki/Door

    A tambour door or roller door is an up-and-over door made of narrow horizontal slats that rolls up and down by sliding along vertical tracks; it is typically found in entertainment centres and cabinets. Rebated doors, a term chiefly used in Britain, are double doors with a lip or overlap (i.e. a rabbet) on the

  6. Revolving door - Wikipedia

    en.wikipedia.org/wiki/Revolving_door

    A revolving door typically consists of three or four doors that hang on a central shaft and rotate around a vertical axis within a cylindrical enclosure. To use a revolving door, a person enters the enclosure between two of the doors and then moves continuously to the desired exit while keeping pace with the doors.

  7. Index of construction articles - Wikipedia

    en.wikipedia.org/wiki/Index_of_construction_articles

    Falsework - Facade - Facade engineering - Facadism - Facility condition assessment - Fareham red brick - Fast-track construction - Fastener - Faux painting - Fédération Française du Bâtiment - Ferrocement - Fiberboard - Fiber cement siding - Fiberglass - Fiberglass sheet laminating - Fiber-reinforced composite - Fiber-reinforced concrete ...

  8. Gull-wing door - Wikipedia

    en.wikipedia.org/wiki/Gull-wing_door

    Gull-wing doors have a somewhat questionable reputation because of early examples like the Mercedes and the Bricklin. [7] The 300 SL needed the door design, as its tubular frame race car chassis design had a very high door sill, which in combination with a low roof would make a standard door opening very low and small.

  9. 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.