The APA-EWS trademark signifies that the I-Joist has been manufactured
to the APA’s strict quality standards by a member of Engineered Wood
Systems (EWS), a related corporation of APA.
PRI stands for Performance Rated I-Joist.
PRI’s are manufactured in conformance with the Performance Standard
for APA EWS I-Joists, PRI-400. This performance standard has been
approved by the British Board of Agrément Assessment
Report No. 1718.
