If it’s properly built and not chintzed on parts, I would not be concerned about any glass shelves.
I have a bespoke custom-built clone of the NAIM FRAIM
https://www.naimaudio.com/product/fraim-0
and the tempered glass shelves support my REGA OSIRIS integrated amp with EZ- PZ ease. ( ~ 57 lbs)
I have a bespoke custom-built clone of the NAIM FRAIM
https://www.naimaudio.com/product/fraim-0
and the tempered glass shelves support my REGA OSIRIS integrated amp with EZ- PZ ease. ( ~ 57 lbs)