<?xml version="1.0" encoding="UTF-8" standalone="no"?><table-reference graph="None" id="_66c4dbed-3019-40bf-8b3f-dc2dc09c32e2" variation="NT"><num>13.7.4a (explanatory)</num><title id="_b76b1478-d134-4276-87d1-4ec274c0b6c4">Flexible ductwork</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>Insulating 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="_4f37db88-f08c-47a8-b906-d63939db29d0" qxa:read-only="true" referencetype="Text" scope="local" synctargettext="true" type="glossterm">R-Value</xref></entry></row></thead><tbody><row><entry>45 mm glasswool (11 kg/m<sup id="_60d19a29-fe70-4458-84f7-04b1000d1d4f">3</sup>)</entry><entry>1.0</entry></row><row><entry>70 mm polyester (6.4 kg/m<sup id="_939b12e6-7069-457b-b38a-a3c54d5cb85f">3</sup>)</entry><entry>1.0</entry></row><row><entry>63 mm glasswool (11 kg/m<sup id="_345e6ad3-5701-444e-9711-60ade1d1b897">3</sup>)</entry><entry>1.5</entry></row><row><entry>90 mm polyester (8.9 kg/m<sup id="_c4d34a2a-ddb6-4211-ab77-42a5cc49d877">3</sup>)</entry><entry>1.5</entry></row><row><entry>85 mm glasswool (11 kg/m<sup id="_a40c3d6a-4886-4292-a093-22a25f8355ee">3</sup>)</entry><entry>2.0</entry></row></tbody></tgroup></table></table-reference>