Glass and Mirrors - Shower glass

I'm building a custom shower. It is an open design with no doors. There are walls on the back and left sides with the shower heads and body sprays. Opposite the body sprays will be a free-standing glass wall whose only purpose is to prevent water from spraying all over the room. It will sit in a track on the shower ledge and be anchored on the left wall. The top and right side have no anchoring. I'm planning on 1/4" tempered glass. What is the maximum size the glass can be without top & side anchoring?
My plan is for a 4' (wide) by 5' (tall) piece of glass. With this size will it be sturdy enough to prevent accidental falls or support if one accidentally leans on it? If I need to anchor it on the right side, where can I get the hardware such as a vertical (preferably chrome plated) 'post' which can be bolted to the floor or shower sill? Thank you.

Better to use 3/8" tempered glass for stability. Any place that sells custom shower doors can make that up. It's called a spray panel. If you can buy the channel to accept 3/8" glass and the glass you can probably save half the cost of buying it from a shower door company.

Yes, I got quotes of around $650-700 from a shower store (including hardware) and under $500 from an all-purpose glass store -- not quite 50% savings. But that was for 1/4". I'll check around for 3/8". Thanks.

Would only caution that an open ( no door ) shower allows steam to escape, making for a cold shower environment.

Did you ever compelte this project? This is exactly what I want and the builder tells me I have to attach the glass on three sides not just two. Please tell me how you accomplished this. Thanks. :wall:

I put in one of these but used 1/2". Wow it was heavy. I used stainless steel channels (just formed sheet metal) on one wall and floor, with stainless steel screws and a whole lot of good drywall anchors for the wall (every 6" if I remember right!). The glass had to be cut funny because the wall and floor weren't 90 degrees - and I didn't want extra long-legged channels just to hide the gap. Clear silicone was the only adhesive. I had the glass shop slightly bevel the edges by sanding, but I smoothed them yet more with ordinary sandpaper.

I hope anyone planning such a project considers the danger of the glass breaking or the channel pulling off the wall. A person slipping in the shower will grab anything within reach, and will give it a mighty yank. So the free corner being within easy reach is a deathtrap, IMO.

It's worth noting here that a ceiling light shining down on the glass edge will carry through the glass and glow through other edges, or in etched designs.