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  2. High-speed door - Wikipedia

    en.wikipedia.org/wiki/High-speed_door

    The speed doors are flexible and light doors for intensive industrial use. High-speed doors are door systems, mainly used in industrial applications. They are technical enhancements of the generally known sectional doors, PVC fabric doors or roller shutters. The main difference is that the durable construction provides a higher operating speed ...

  3. Polyvinyl chloride - Wikipedia

    en.wikipedia.org/wiki/Polyvinyl_chloride

    PVC properties as a function of phthalate plasticizer level [24] Plasticizer content (% DINP by weight) Specific gravity (20 °C) Shore hardness (type A, 15 s) Flexural stiffness Tensile strength (Mpa) Elongation at break (%) Example applications Rigid: 0: 1.4: 900: 41 <15: Unplasticized PVC (UPVC): window frames and sills, doors, rigid pipe ...

  4. Folding door - Wikipedia

    en.wikipedia.org/wiki/Folding_door

    A folding door is a type of door which opens by folding back in sections or so-called panels. Folding doors are also known as 'bi-fold doors', in spite of them most often having more than two panels. Folding doors are also known as 'bi-fold doors', in spite of them most often having more than two panels.

  5. Door - Wikipedia

    en.wikipedia.org/wiki/Door

    A sliding glass door, sometimes called an Arcadia door or patio door, is a door made of glass that slides open and sometimes has a screen (a removable metal mesh that covers the door). Australian doors are a pair of plywood swinging doors often found in Australian public houses.

  6. Leaded gas created a mental health crisis for this generation

    www.aol.com/leaded-gas-created-mental-health...

    The Environmental Protection Agency warns parents of children living in older homes to be aware of high-use areas such as window sills, doors, door frames, stairs, railings, banisters and porches.

  7. 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.

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