<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">air curtains</topic></authority><related type="broader"><topic>doorway components</topic></related><variant type="other"><topic>air curtain</topic></variant><variant type="other"><topic>air doors</topic></variant> <note xml:lang="en"><![CDATA[ Streams of high-velocity, temperature-controlled air which are directed downward across an opening to prevent transfer of heat across it, thus making it possible to air condition a space having an open entrance. ]]></note></mads>