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2. Storm door - Wikipedia

   en.wikipedia.org/wiki/Storm_door

   Storm door, Japan. A storm door is a type of door that is installed in front of an exterior access door to protect it from bad weather and allow ventilation.Storm doors generally have interchangeable glass panels and window screen panels to provide visibility and prevent flying insects from entering the home.

3. Sliding glass door - Wikipedia

   en.wikipedia.org/wiki/Sliding_glass_door

   Swinging glass doors are a better choice than the typical sliding glass doors, since they offer a much tighter seal, [7] but glass – even the best type of glass, chosen according to the climate zone – is always a poor insulator, making doors based on them a poor choice from a thermal comfort perspective.

4. Door closer - Wikipedia

   en.wikipedia.org/wiki/Door_closer

   Whereas interior closers typically use hydraulics, storm door closers are more typically pneumatic, using air and springs to close the door. Storm door closers often have a small metal square washer on the rod that is used to lock the closer in the open position if required, more recent models have a button to actuate the hold open feature to ...

5. Sliding door operator - Wikipedia

   en.wikipedia.org/wiki/Sliding_door_operator

   A door operator may be triggered in various ways: Approach Sensor (such as a radar sensor) - the door opens when a user approaches it. Pushbutton - the door opens when a user presses a button. Access control - the door opens when an access control system determines the user is authorized to go through. Automatically (in the case of elevators).

6. Storm window - Wikipedia

   en.wikipedia.org/wiki/Storm_window

   On older houses, storm windows were installed in autumn when the window screens were removed; later homes had the pieces combined in one unit. Similarly, storm doors (also called "screen doors") allow similar energy savings for the necessarily less efficient primary doors – the screen allows for summer ventilation.

7. Flood barrier - Wikipedia

   en.wikipedia.org/wiki/Flood_barrier

   The Oosterscheldekering contains 62 steel doors, each 42 metres (138 ft) wide The Maeslantkering closes the main entrance to the Port of Rotterdam, the largest port in Europe. A flood barrier , surge barrier or storm surge barrier is a specific type of floodgate , designed to prevent a storm surge or spring tide from flooding the protected area ...

8. 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]