NZS 4211 Compliant Timber Joinery
NZS 4211 is a Standard for the performance testing of individual windows and doors for exterior use.
Windows and doors, including the glazing system, are tested and can be labelled and certified as complying with one or more New Zealand wind zones.

The NZS 4211 Compliant Timber Joinery programme has been developed by a group of New Zealand Master Joiners who manufacture timber doors and windows and who label their products to certify that they comply with the requirements of NZS 4211 for the wind zone within which the products are installed.
Members of the programme also provide assistance to Local Authorities, specifiers and tradespeople that specify or use these products by providing drawings, specifications and installation instructions.