PG7:21 Purchasing Guidelines for Prefabricated Structural Transom Units

The purpose of this guidance note is to detail best purchasing practice for Prefabricated Structural Transom
Units. If the PST Unit is sourced from an NASC compliant company, as demonstrated by the product assessment
audit report, then no further action is required. If the PST Unit is not sourced from an NASC compliant company the following guidelines should be
followed.

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