Safety is the paramount concern for shower boxes. You must prioritize Tempered Safety Glass that meets international standards such as EN 12150-1 (Europe) or ANSI Z97.1 (USA). For high-end commercial projects, a thickness of 8mm to 10mm provides a premium, sturdy feel, while 6mm is the standard for cost-effective residential solutions. Additionally, look for glass with an Easy-Clean (Nano) coating to reduce water stains and limescale buildup, significantly lowering maintenance costs for the end-user.