38" s glass or something comparable... Where to get it?

I'm building a SUP (gasp!) for my uncle. Our breaks are uncrowned and he surfs in far away places alone (how it should be)

I'm having trouble sourcing anything but e glass that's wide enough to glass with that's a reasonable price ($14 per yard for the s glass I found)

I'm trying to avoid e glass. Hoping to run double 6oz s glass top and bottom.

Anyone got any leads or info?