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2. Ridge vent - Wikipedia

   en.wikipedia.org/wiki/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. Ridge vents are also used in industrial warehouses to help release the hot air and help circulate comfortable air inside the building .

3. Sound attenuator - Wikipedia

   en.wikipedia.org/wiki/Sound_attenuator

   An inner perforated layer of light gauge sheet metal (baffle) The baffle is then filled with sound-absorptive insulation In high velocity systems, or when there is a concern for particulate matter in the air stream, a bagged or mylar-faced insulation is used. Packless sound attenuators do not include sound-absorptive insulation.

4. Baffle (heat transfer) - Wikipedia

   en.wikipedia.org/wiki/Baffle_(heat_transfer)

   Baffles are flow-directing or obstructing vanes or panels used to direct a flow of liquid or gas. It is used in some household stoves [ 1 ] and in some industrial process vessels (tanks), such as shell and tube heat exchangers , chemical reactors , and static mixers .

5. Construction estimating software - Wikipedia

   en.wikipedia.org/wiki/Construction_estimating...

   Construction cost estimating software is computer software designed for contractors to estimate construction costs for a specific project. A cost estimator will typically use estimating software to estimate their bid price for a project, which will ultimately become part of a resulting construction contract.

6. Ventilation (architecture) - Wikipedia

   en.wikipedia.org/wiki/Ventilation_(architecture)

   As more architecture incorporated mechanical ventilation, the cost of outdoor air ventilation came under some scrutiny. In 1973, in response to the 1973 oil crisis and conservation concerns, ASHRAE Standards 62-73 and 62–81) reduced required ventilation from 10 CFM (4.76 L/s) per person to 5 CFM (2.37 L/s) per person. In cold, warm, humid, or ...

7. How to save for a home down payment when rates are falling - AOL

   www.aol.com/finance/save-home-down-payment-rates...

   The other key benefit to a CD: You can calculate exactly how much money you’ll have at maturity. For example, if you’ve already set aside $25,000 in a savings account, you could open a six ...