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2. Door - Wikipedia

   en.wikipedia.org/wiki/Door

   Door casing, door frame, or chambranle – formed by the lintel and the two jambs. Sill (for exterior doors) – A horizontal sill plate below the door that supports the door frame. Similar to a window sill but for a door; Threshold (for exterior doors) – A horizontal plate below the door that bridges the crack between the interior floor and ...

3. Storm door - Wikipedia

   en.wikipedia.org/wiki/Storm_door

   PVC or "vinyl" storm doors often require internal steel frames to provide the necessary strength to the door. However, extruded PVC doors offer extraordinary strength. Fibreglass storm door frames are extremely strong, but the material is more expensive. Both PVC and fibreglass storm doors incorporate chemicals to slow the effects of ...

4. Folding door - Wikipedia

   en.wikipedia.org/wiki/Folding_door

   Another term is 'concertina' doors, inspired by the musical instrument of the same name. Folding doors can be used as internal or external room dividers and are made from a variety of materials. Most folding doors are glazed and the panels have frames of either wood, aluminium or upvc. They can open up and fold either internally or externally ...

5. Polyvinyl chloride - Wikipedia

   en.wikipedia.org/wiki/Polyvinyl_chloride

   11 External links. Toggle the table of contents ... Unplasticized PVC (UPVC): window frames and sills, doors, ... and doors. PVC is widely and heavily used in ...

6. 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 ...

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