Structural one is rated for seismic retrofit get the job done, that means it's made to be earthquake resistant. Unless they've got a Structural 1 rating, other plywood panels of any width aren't suited for seismic retrofitting. You will see some thinner plywood sheets with plies organized at 90° angles https://emiliomalwg.blogozz.com/32625038/5-essential-elements-for-wood-domain