Vertical Shower Seal - 4-6mm Glass, Fin 10/15/20/25mm

What this seal is

A clear vertical seal for shower and bath screens with 4mm, 5mm or 6mm glass. The rigid PVC U-section pushes onto the edge of the glass and grips comfortably with no additional adhesive, while a soft side fin closes the gap between the glass and the adjacent surface.

It is most often used vertically — commonly in conjunction with another similar-shaped seal on the opposite panel — and can also be fitted along the bottom of a screen. With four fin depths available, one profile covers a range of gap sizes. Sold as a single length.

Choose your fin depth

The fin is available in 10mm, 15mm, 20mm or 25mm depths — measure the gap you need to close and pick the fin that covers it. If your gap sits between two sizes, choose the larger fin — the soft blade flexes for a tighter seal.

Specification

Why fit this seal

Stops leaks where panels meet. A worn or missing vertical seal lets water escape between the door and the adjacent panel or wall — replacing it takes minutes and protects flooring and plaster.

One profile, four fin depths. Whether the gap is 10mm or 25mm, the same clip-on channel with the right fin closes it neatly — and the clear PVC is barely visible once fitted.

No adhesive, no mess. The rigid U-channel grips 4–6mm glass on its own — it slides straight on and comes off without leaving residue.

Cut to fit at home. Order the next length up and trim it for an exact edge-to-edge fit, or let us cut it for you.

Fitting in three steps

1. Measure. Check your glass is 4–6mm thick, measure the height of the glass edge, and measure the gap you need to close.

2. Choose. Pick the fin depth that covers your gap and the nearest length at or above your measurement — 800mm, 900mm, 1400mm or 2000mm.

3. Fit. Trim to length if needed, then push the U-channel onto the edge of the glass so the fin faces the surface it seals against. 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 depth and length before you order — usually the same working day. Got curved glass? We can curve this seal to your measurements — just get in touch and we’ll send you our simple measuring guide.