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2. Register (air and heating) - Wikipedia

   en.wikipedia.org/wiki/Register_(air_and_heating)

   Usually, a register is placed near a window or door, which is where the greatest heat/cooling loss occurs. [ 4 ] [ 5 ] In contrast, returns (grilled ducts which suck air back into the HVAC system for heating or cooling) are usually placed in the wall or ceiling nearest the center of the building.

3. McEntire Joint National Guard Base - Wikipedia

   en.wikipedia.org/wiki/McEntire_Joint_National...

   C-130 taking off from McEntire F-104As on the ramp at McEntire. McEntire Joint National Guard Base or McEntire JNGB (IATA: MMT, ICAO: KMMT, FAA LID: MMT) is a military airport located in Richland County, South Carolina, United States, 10 miles (16 km) west of the town of Eastover and approximately 15 miles southeast of the city of Columbia.

4. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   Rooftop HVAC unit with view of fresh-air intake vent Ventilation duct with outlet diffuser vent. These are installed throughout a building to move air in or out of rooms. In the middle is a damper to open and close the vent to allow more or less air to enter the space. The control circuit in a household HVAC installation.

5. Gable - Wikipedia

   en.wikipedia.org/wiki/Gable

   The term gable wall or gable end more commonly refers to the entire wall, including the gable and the wall below it. Some types of roof do not have a gable (for example hip roofs do not). One common type of roof with gables, the ' gable roof ', is named after its prominent gables.

6. Drain-waste-vent system - Wikipedia

   en.wikipedia.org/wiki/Drain-waste-vent_system

   The high point of the vent system (the top of its "soil stack") must be open to the exterior at atmospheric pressure. On large systems, separate parallel vent stacks may also be run to ensure sufficient airflow, because the number of devices linked to an atmospheric vent, and their distances from it, are regulated by plumbing code.

7. Ridge vent - Wikipedia

   en.wikipedia.org/wiki/Ridge_vent

   Early 20th century industrial gas processing plant near Petrolia, Texas. Structure is illustration of natural ventilation with a ridge vent. A ridge vent is a type of vent installed at the peak of a sloped roof which allows warm, humid air to escape a building's attic. Ridge vents are most common on shingled residential buildings.

8. News, Politics, Sports, Mail & Latest Headlines - AOL.com

   www.aol.com/news

   Get breaking news and the latest headlines on business, entertainment, politics, world news, tech, sports, videos and much more from AOL

9. Duct (flow) - Wikipedia

   en.wikipedia.org/wiki/Duct_(flow)

   It is commonly attached with long zip ties or metal band claps. However, the pressure loss is higher than for most other types of ducts. As such, designers and installers attempt to keep their installed lengths ( runs ) short, e.g. less than 15 feet (5 m) or so, and try to minimize turns.