<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause"?><clause id="_ce3a84e4-3d81-4628-851e-59166314d59f" outputclass="ncc-clause"><meta><facet building="Class 1a"/><facet building="Class 1b"/><facet building="Class 10a"/><facet building="Class 10b"/><facet building="Class 10c"/></meta><sptc>J5D3</sptc><title id="_8f096282-494e-4b19-a6ed-f29dc3d7f178">Chimneys and flues</title><archive-num>2019: J3.2</archive-num><subclause id="_2ab3d3c5-c432-405d-92f9-41c5296aabc8" outputclass="subclause"><title id="_ebcfaf16-d564-4d41-bc65-a4b32b3063d4">SubClause</title><num>1</num><p>The chimney or flue of an open solid-fuel burning appliance must be provided with a damper or flap that can be closed to seal the chimney or flue.</p></subclause></clause>