When selecting glass doors for a shower enclosure, first determine the configuration that suits your bathroom layout—framed (economical, water-tight), semi-frameless (middle-tier option with minimal metal), or frameless (premium, contemporary aesthetic). Choose glass thickness based on door size and type: 3/8-inch (10mm) for standard doors and 1/2-inch (12mm) for larger frameless installations. For privacy and design preferences, consider clear glass for spacious bathrooms, or select from frosted, patterned, tinted, or rain glass options that obscure visibility while maintaining light transmission. Ensure all glass carries tempered safety certification. Evaluate hardware finishes (chrome, brushed nickel, matte black) to complement existing fixtures. For long-term maintenance, consider protective coatings like ShowerGuard or EnduroShield that resist water spots and simplify cleaning. Always measure carefully and consult professional installers to ensure proper fit and function.