Marcy Quantum Molding 9.5mm × 75ft | 3/8" Universal Exterior Replacement | QM10
✅ In Stock
The Marcy QM10 is a 9.5mm flexible universal exterior replacement molding, sold as a 75ft roll. A popular mid-narrow width, it fits a broad range of import and compact domestic vehicles where exterior glass molding has cracked, shrunk, or gone missing. Flexible compound installs cleanly around curves and holds its shape at the glass perimeter.
Specifications
- Part Number: QM10
- Width: 9.5mm (approx. 3/8")
- Length: 75ft (22.8m) roll
- Style: Standard
- Application: Universal exterior replacement molding
Width Selection Guide
Measure the gap between the glass edge and the surrounding trim or channel on the vehicle. At 9.5mm, QM10 is a common fit for compact cars, sedans, and many import vehicles with mid-narrow exterior molding channels. If your gap measures closer to 1/4", step down to QM7; if it's closer to 5/8", move up to QM16.
What is Quantum Molding?
Quantum Molding is a flexible exterior universal replacement molding designed to fit a wide range of glass openings without requiring a vehicle-specific part. It installs along the exterior glass edge and provides a clean, weather-resistant finish. It's commonly used when OEM molding is damaged, missing, or no longer available as a direct replacement.
What's the difference between standard and Design Line?
Standard Quantum Molding has a uniform profile across the full width. Design Line (QM16L and QM19L) features a decorative accent integrated into the outer face of the molding, giving it a more finished, OEM-like appearance from the exterior. For a clean but understated profile, standard is the right call.
How do I select the right width?
Measure the gap between the glass edge and the surrounding trim or pinchweld. The molding width should match this gap closely. Quantum Molding is flexible enough to accommodate minor variation — but if you're between sizes, the narrower width typically seats more cleanly than one that's too wide.
How is this installed?
Press the molding into place along the glass edge, typically after the glass has been set. Work around the perimeter section by section, pressing firmly into the channel. For tight curves, a brief pass with a heat gun on low makes the molding more pliable. A molding tool or wide flathead helps seat it evenly without scuffing the surrounding trim.
How much molding does one job use?
A standard windshield perimeter uses approximately 12 to 16 feet of exterior molding. A 75ft roll covers roughly 4 to 6 full installs. For smaller glass like quarter windows or rear sliders, a roll goes significantly further.