Besa Tr6 | Pdf
Historically, earlier versions of ductwork specifications carried designations like . Over time, this was superseded by DW/144 (first published in 1983 and revised in 1998 and more recently updated as DW/194 for rectangular ducts). However, many industry veterans and older tender documents still refer to the "TR6 standard."
If your request was regarding financial construction forms, "TR6" also refers to a specific UK tax form used within the Construction Industry Scheme (CIS). This form is used by contractors to report deductions made from payments to subcontractors. If this was the document you intended, please note that this is a tax document governed by HMRC, not BESA. besa tr6 pdf