Non-glass options for custom shower door
Polycarbonate is used in many industrial machines I used to work on. It is like a very strong alternative to acrylic, it doesn't shatter easily and can be gotten in a good clear grade. More expensive than acrylic but alot tougher

It was used for windows on oil reservoirs and for interlocked guards on production lines where you could see the product through the clear polycarbonate and then i
Access if required. The staff were a nightmare for treating things like sh*t and you always knew an acrylic sheet from a polycarb one because acrylic ones were always cracked.