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Magic Touch Mechanical - Many people think "ventilation" refers to your central air's ductwork. In fact it's the process of removing stale air from your home and bringing in fresh air. See
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![. Natural and artificial methods of ventilation. r forced in wereenormous. Wonderful results may be shown in theway of tables of cubic feet of air {)ropellc(l into abuilding, but they are illusory as in any way indi-cating the efficiency of the ventilation. . . The expert ... . Natural and artificial methods of ventilation. r forced in wereenormous. Wonderful results may be shown in theway of tables of cubic feet of air {)ropellc(l into abuilding, but they are illusory as in any way indi-cating the efficiency of the ventilation. . . The expert ...](https://l450v.alamy.com/450v/2cemc47/natural-and-artificial-methods-of-ventilation-r-forced-in-wereenormous-wonderful-results-may-be-shown-in-theway-of-tables-of-cubic-feet-of-air-ropellcl-into-abuilding-but-they-are-illusory-as-in-any-way-indi-cating-the-efficiency-of-the-ventilation-the-expert-further-adds-tohis-report-on-the-ventilation-of-the-houses-ofparliament-i-never-yet-knew-of-a-system-ofpropulsion-pure-and-smiple-that-effected-an-efficientand-satisfactory-ventilation-of-any-large-building-the-architect-to-the-local-governmentboard-reports-that-mechanical-ventilating-arrange-ments-are-generally-utte-2cemc47.jpg)
. Natural and artificial methods of ventilation. r forced in wereenormous. Wonderful results may be shown in theway of tables of cubic feet of air {)ropellc(l into abuilding, but they are illusory as in any way indi-cating the efficiency of the ventilation. . . The expert ...
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