Prime-Line Frameless 36 in. Shower Door Base Seal (Model M6258)

Keep your bathroom floors dry and your shower looking pristine with the Prime-Line Shower Door Bottom Seal. Crafted from clear, durable vinyl, this slip-on seal fits frameless shower doors with 3/8 in. thick glass, creating an effective water barrier without the need for adhesives. At 36 in. long, it covers most standard door widths—and if your opening is shorter, simply trim it to size with a utility knife, tin snips or hacksaw.

Equipped for quick, tool-free installation, the M6258 seal helps prevent leaks, mold and mildew buildup while preserving the sleek, minimalist look of frameless glass showers. Whether you’re replacing a worn-out seal or outfitting a new door, this bottom seal delivers a clean, unobtrusive fit that blends seamlessly with clear glass panels.

Key Features

• Fits 36 in. frameless shower doors with 3/8 in. (0.38 in.) thick glass
• Slip-on design—no adhesive or caulking required
• Made of clear vinyl for a low-profile, virtually invisible look
• Can be cut down to custom lengths for smaller openings
• Helps contain water, reducing leaks and protecting bathroom floors

⚠️ WARNING: This product can expose you to Polychlorinated biphenyls known to the State of California to cause birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.