The Showgard 28/215mm Clear Strip is a specialized "in-between" height designed for collectors who prefer a tailored look for taller definitive stamps and medium-sized commemoratives. At 28mm high (approx. 1.10 inches), it provides a precision fit for stamps that measure roughly 26mm in height.
The 215mm width is the European/A4 standard, making it the perfect width for international album systems like Lighthouse or Leuchtturm without the need for trimming down longer U.S.-style strips.
Tailored Clear Format: The 28mm height is ideal for stamps that are too tall for 25mm/27mm mounts but would look "loose" or have too much empty space in a 31mm mount.
All-Clear Transparency: Both the front and back are crystal clear. This is the preferred choice for collectors who want a "borderless" look, allowing the stamp to blend seamlessly into the album page or making the reverse side visible for inspection.
Archival Grade Polystyrene: Made from 100% oriented polystyrene, which is acid-free, PVC-free, and contains no plasticizers. This ensures the mount will not yellow or react with the stamp gum over time.
Twin-Weld Protection: Features parallel welds at the top and bottom. This "sleeve" design creates a secure pocket that allows air to circulate around the stamp, preventing moisture buildup.
Horizontal Split-Back: The clear backing is split horizontally. Flexing the strip allows you to use your tongs to slide stamps in easily without risking damage to the delicate edges.
| Feature | Specification |
| Size Designation | 28/215 Clear |
| Width | 215mm (8.5 inches) |
| Height | 28mm (1.10 inches) |
| Color | Crystal Clear (Transparent Front & Back) |
| Quantity per Pack | 25 Strips |
| Primary Use | Tall Definitives and Mid-Sized Commemoratives |
Tall Modern Definitives: Ideal for taller definitive series from the United Kingdom (Large Machins), Canada, and Australia.
Modern U.S. Issues: Fits many modern vertical "Forever" stamps and commemoratives that utilize a medium-sized format.
Specialized Inspection: Perfect for stamps where you need to see back-printed information, plate numbers on the gum, or watermarks without removing the stamp.
Custom Cutting: One 215mm strip can be cut into approximately 7 to 9 individual mounts using a Showgard Guillotine Cutter.
Since both the mount and the adhesive are clear, any excess water used to wet the gum will be visible as a "silvered" mark or bubble behind the mount. For the cleanest look, use a Showgard Sponge & Water Tray or a very lightly dampened cotton swab to apply moisture only to a small strip at the top. This keeps the presentation professional and prevents the page from wrinkling.