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  2. WELL Building Standard - Wikipedia

    en.wikipedia.org/wiki/WELL_Building_Standard

    A09 Pollution Infiltration Management topic, entrance way design such as 3 meters' air door and to slow movement of air from outdoor to indoor by building vestibule or revolving doors, air curtain and management by wet cleaning once a week, vacuuming once a day provides 1 point and envelope of building that is designed to mitigate outside air ...

  3. Letter box - Wikipedia

    en.wikipedia.org/wiki/Letter_box

    Envelope size C4 (229 mm × 324 mm) must be deliverable without bending or damage; The internal volume must able to hold at least a 40 mm high bundle of C4 envelopes; Aperture width of either 230–280 mm (> C4 width) or 325–400 mm (> C4 height) Aperture height of 30–35 mm; Mounting height of between 0.7 and 1.7 m for the aperture

  4. Stack effect - Wikipedia

    en.wikipedia.org/wiki/Stack_effect

    The net negative pressure on lower floors can induce outdoor air to infiltrate the building through doors, windows, or ductwork without backdraft dampers. Warm air will attempt to exfiltrate the building envelope through floors above the neutral axis. Mechanical refrigeration equipment provides sensible and latent cooling during summer months.

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  6. Padded envelope - Wikipedia

    en.wikipedia.org/wiki/Padded_envelope

    A padded envelope, also known as a padded or cushioned mailer, or jiffy bag in the United Kingdom, is an envelope incorporating protective padding to protect items during shipping. The padding is usually thick paper, bubble wrap , or foam.

  7. Post office box - Wikipedia

    en.wikipedia.org/wiki/Post_office_box

    PO boxes in the lobby of a U.S. post office. Post office boxes are usually mounted in a wall of the post office, either an external wall or a wall in a lobby, so that staff on the inside may deposit mail in a box, while a key holder (some older post office boxes use a combination dial instead of a key) in the lobby or on the outside of the building may open their box to retrieve the mail.

  8. Building airtightness - Wikipedia

    en.wikipedia.org/wiki/Building_airtightness

    The airtightness of a building is often expressed in terms of the leakage airflow rate through the building's envelope at a given reference pressure (usually 50 pascal) [10] divided by the: Heated building volume V. At 50·Pa, it is called the air change rate at 50 Pa and usually noted n 50 (units: h −1). [13] [14] Envelope area A E.

  9. Newspaper vending machine - Wikipedia

    en.wikipedia.org/wiki/Newspaper_vending_machine

    Anchorage Daily News vending machine. A newspaper vending machine or newspaper rack is a vending machine designed to distribute newspapers.Newspaper vending machines are used worldwide, and they are often one of the main distribution methods for newspaper publishers.

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