Vertical Shower Seal - 10-12mm Glass, Fin 10/15/20/25mm

What this seal is

A clear vertical fin seal for shower screens and doors with 10–12mm glass. The rigid PVC U-channel pushes straight onto the edge of the glass and grips it firmly with no adhesive, while the soft side fin closes the gap between your door and the adjacent wall, tiles or fixed panel — stopping water escaping every time you shower.

This profile is most often fitted vertically on the upright edge of the glass, commonly paired with a similar seal on the opposite panel, and it works just as well horizontally along the bottom edge of a bath screen or shower door.

Choose your fin width

The soft fin is available in four widths — 10mm, 15mm, 20mm or 25mm. Measure the gap you need to close, then pick the fin width that spans it. If your gap sits between two sizes, choose the larger fin — the flexible blade compresses to fit and gives a tighter seal.

Specification

Why fit this seal

Stops leaks and protects your bathroom. A worn, discoloured or missing fin seal lets water track past the edge of the glass onto floors and skirting. Replacing it takes minutes and prevents long-term water damage.

No adhesive, no mess. The U-channel grips 10–12mm glass on its own — it slides straight on and can be removed or repositioned without leaving residue on the glass.

Four fin widths from one profile. Whichever size gap sits between your door and the wall or fixed panel, the right fin width closes it neatly — and the clear PVC is barely visible once fitted.

Cut to fit at home. Order the next length up and trim it down for a perfect fit, or use our custom cutting service and it arrives ready to fit.

Fitting in three steps

1. Measure. Check your glass is 10–12mm thick, measure the height of the glass edge, and measure the gap you need to close.

2. Choose. Pick the fin width that spans your gap and the nearest length at or above your measurement.

3. Fit. Trim to length if needed, then push the channel onto the edge of the glass so the fin faces the wall or fixed panel. No tools, no adhesive, no drying time.

Not sure it fits?

Email a photo of your old seal or your measurements to sales@industrial-polymers.co.uk and our UK team will confirm the right profile, fin width and length before you order — usually the same working day. Got curved glass? We can curve this seal to your measurements too; just get in touch and we'll send you our simple measuring guide.