1. Product Overview
The Prime-Line M 6262 Frameless Shower Door Bottom Seal is designed to prevent water leaks from the bottom of frameless, swinging shower doors. Constructed from clear vinyl material, this seal attaches without the need for adhesives, offering a clean and effective solution for maintaining a dry bathroom. It is ideal for replacing old, discolored, moldy, or ineffective shower door seals. The seal is 36 inches long and can be cut to fit shorter doors using common tools like a hacksaw, tin snips, or a utility knife.
2. Key Features
- Specific Fit: Designed exclusively for 1/4 inch (6mm) thick frameless glass shower doors. Please measure your door thickness accurately before purchasing.
- Optimal Length: Comes in a 36-inch length, easily trimmable to fit custom door widths.
- Water Barrier: Effectively prevents water from leaking out of the shower enclosure.
- Easy Installation: Features a slip-on design that requires no adhesives, simplifying the replacement process.
- Durable Material: Made from clear vinyl for long-lasting performance and a discreet appearance.
3. Important Notes & Warnings
This bottom seal is specifically designed for 1/4 inch (6mm) thick glass doors only. Using it on doors of different thicknesses (e.g., 3/8 inch or 1/2 inch) will result in an improper fit and may not prevent leaks effectively. Always measure your shower door's glass thickness before ordering to ensure compatibility.

Image: Diagram illustrating the correct fit for 1/4 inch glass and incorrect fits for 3/8 inch and 1/2 inch glass.
Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
4. Installation Guide
Follow these steps for proper installation of your new shower door bottom seal:
- Measure Door Thickness: Before purchasing, accurately measure the thickness of your frameless shower door glass to confirm it is 1/4 inch.
- Remove Old Seal: Carefully remove any existing bottom seal from your shower door.
- Clean the Door: Thoroughly clean the bottom edge of the shower door where the seal will be installed. Remove any hard water spots, soap scum, or residue. Using rubbing alcohol can help ensure a clean, grease-free surface for optimal fit.
- Measure and Cut to Size: Measure the width of your shower door. If the 36-inch seal is longer than your door, use a hacksaw, tin snips, or a utility knife to carefully cut the seal to the exact length of your door.
- Install the New Seal: Align the new seal with the bottom edge of the glass door. Gently slide the seal onto the glass. It should be a tight fit to ensure a secure, leak-proof seal.
- Orient Drip Guard: Ensure the drip guard (the flexible flap) faces towards the inside of the shower. This directs water back into the shower area, preventing leaks onto the bathroom floor.

Image: A hand using a ruler to measure the thickness of a glass shower door, indicating the importance of accurate measurement.
Video: An official Prime-Line video demonstrating the features and installation process of frameless shower door sweeps, including measuring and fitting.
5. Usage & Operation
Once installed, the Prime-Line M 6262 shower door bottom seal functions automatically to create a barrier against water. The single flap design ensures that water running down the inside of the shower door is directed back into the shower pan, preventing it from escaping onto the bathroom floor. No special operation is required; simply use your shower as normal.
6. Maintenance
To ensure the longevity and effectiveness of your shower door bottom seal, regular maintenance is recommended:
- Regular Cleaning: Clean the seal periodically with a mild, non-abrasive bathroom cleaner to prevent the buildup of soap scum, hard water deposits, and mold. This helps maintain its clear appearance and flexibility.
- Inspect for Wear: Periodically check the seal for signs of wear, cracking, discoloration, or hardening. Over time, vinyl seals can degrade, reducing their effectiveness.
- Avoid Harsh Chemicals: Do not use harsh chemical cleaners or abrasive tools, as these can damage the vinyl material.
7. Troubleshooting
If you experience water leaks after installing the new seal, consider the following:
- Incorrect Thickness: Double-check that your shower door glass is indeed 1/4 inch thick. If it is thicker or thinner, this seal will not provide an adequate barrier.
- Improper Orientation: Ensure the drip guard flap is facing towards the inside of the shower. If it faces outwards, water will be directed onto the bathroom floor.
- Uneven Cut: If the seal was cut to size, ensure the cut was straight and even, allowing for a consistent fit across the entire bottom edge of the door.
- Door Alignment: Verify that your shower door is properly aligned and closes completely. Gaps elsewhere in the door's closure can also lead to leaks.
8. Specifications
| Brand | PRIME-LINE |
| Model Number | M 6262 |
| Material | Vinyl |
| Color | Clear |
| Product Dimensions | 36"L x 0.25"W |
| Item Thickness (for glass) | 1/4 inch |
| Style | Single Flap |
| Item Weight | 7.2 ounces |
| Included Components | Frameless Shower Door Seal |
9. Warranty & Support
For information regarding product warranty, returns, or technical support, please refer to the official PRIME-LINE website or contact their customer service directly. Keep your purchase receipt for any warranty claims.





