<?xml version="1.0" encoding="UTF-8" standalone="no"?><table-reference graph="None" id="_eed7f13d-641d-4e82-a786-6915a7f9a240" variation="NT"><num>13.7.4c (explanatory)</num><title id="_09dec5ae-49fc-4acf-bbd2-7ab6c918bba8">Sheetmetal ductwork – internal insulation</title><table id="_0bb616c7-0da6-415b-9bd5-4b765f8ab940" keycol="1"><tgroup cols="2"><colspec colname="002" colnum="1" colwidth="216.00*"/><colspec colname="003" colnum="2" colwidth="216.00*"/><thead><row><entry>Insulting material and thickness</entry><entry><xref xmlns:qxa="urn:schemas-quark-com:xmlauthor" format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1420_0.4.0.xml#_f438bdfd-6adb-43c4-b342-7b1656af23c4" id="_7f91a6d1-b623-44e8-bc4e-20c386055d66" qxa:read-only="true" referencetype="Text" scope="local" synctargettext="true" type="glossterm">R-Value</xref></entry></row></thead><tbody><row><entry>38 mm glasswool (32 kg/m<sup id="_e03cb36c-301b-4e65-a6ba-621685933f6b">3</sup>)</entry><entry>1.0</entry></row><row><entry>50 mm polyester (32 kg/m<sup id="_71e44158-88a6-48ab-b3c2-fabdda2f7f56">3</sup>)</entry><entry>1.3</entry></row><row><entry>50 mm glasswool (32 kg/m<sup id="_d8a6c376-8723-4787-bb37-50a4701d11e0">3</sup>)</entry><entry>1.5</entry></row></tbody></tgroup></table></table-reference>