✓ In stock — ships within 1 business day Precision 13mm cavity-style universal glass molding — a U-channel profile that wraps around and grips the glass edge, providing a clean, finished appearance around the glass opening. Made from a custom compound with an OEM-type finish that stays flexible in cold and doesn't shrink. Contains butyl in the channel to help secure the molding to the glass. Sold per 75-foot roll. Specifications Width: 13mm Length: 75ft per roll Style: Cavity (C-channel) Material: Custom compound with OEM-type finish Channel Fill: Butyl adhesive pre-applied in channel Part Number: PRP1375CAV Application Universal fit — cavity molding width should match the edge thickness of the glass being installed. Verify glass edge dimension and channel opening before ordering. Used where a finished molding profile around the glass perimeter is required. What is cavity-style glass molding? Cavity or C-channel molding has a U-shaped cross-section that slides over and grips the edge of the glass. Unlike underside molding (which sits under the glass during installation), cavity molding wraps around the glass perimeter and provides a visible, finished trim appearance. It is commonly used on fixed-glass applications where a clean edge is needed around the glass opening. How do I select the right cavity molding width? Measure the thickness of the glass edge (typically 4–6mm for standard automotive glass) and select a cavity molding whose channel opening matches. The 13mm designation refers to the overall width of the molding profile — verify that the internal channel fits the glass edge thickness before cutting and applying. What does the butyl in the channel do? The pre-applied butyl adhesive in the channel helps the molding grip and stay seated on the glass edge without needing additional adhesive. Butyl also provides a flexible, weatherproof bond — it remains pliable over time and won't harden or crack the way some adhesives can in extreme temperatures. How much molding do I need per installation? Calculate the perimeter of the glass opening and add 10–15% for waste and corner fitting. Most passenger vehicle windshields have a perimeter of 12–16 feet. A 75-foot roll typically covers 4–5 complete glass perimeters depending on vehicle size. Is this compatible with OEM and aftermarket glass? Yes — this universal cavity molding is cut to length on-site and fits both OEM and aftermarket glass edges. Always verify the glass edge thickness on the specific glass being installed, as aftermarket profiles can vary slightly from OEM.
