Vertical Side Seals

Find the right vertical shower door seal by gap size. Durable, precise fit, and built to last. Direct supply with UK stock for fair prices and fast free delivery.

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49 products

4-6mm Glass Bulb Seals Gap 7mm D456S74-6mm Glass Bulb Seals Gap 7mm D456S7

4-6mm Glass Bulb Seals Gap 7mm D456S7

From £14.88
£21.00 From £14.88
4-6mm Glass Bulb Seals Gap 12mm D456S124-6mm Glass Bulb Seals Gap 12mm D456S12

4-6mm Glass Bulb Seals Gap 12mm D456S12

From £14.88
£21.00 From £14.88
Shower Door Vertical Bubble Seal & Fin 4-6mm Glass Gap 15mm DA456S15Shower Door Vertical Bubble Seal & Fin 4-6mm Glass Gap 15mm DA456S15

Shower Door Vertical Bubble Seal & Fin 4-6mm Glass Gap 15mm DA456S15

From £14.88
£21.00 From £14.88
4mm-6mm Glass H Shape Seal Gap 3-6mm H456S84mm-6mm Glass H Shape Seal Gap 3-6mm H456S8

4mm-6mm Glass H Shape Seal Gap 3-6mm H456S8

£29.99
£35.99 £29.99
4mm-6mm Glass H Shape Seal Gap 3-13mm H456S154mm-6mm Glass H Shape Seal Gap 3-13mm H456S15

4mm-6mm Glass H Shape Seal Gap 3-13mm H456S15

£29.99
£35.99 £29.99
4mm-6mm Glass H Shape Seal Gap 3-18mm H456S204mm-6mm Glass H Shape Seal Gap 3-18mm H456S20

4mm-6mm Glass H Shape Seal Gap 3-18mm H456S20

From £3.48
£7.19 From £3.48
H-seal For Shower Door 4-6mm Glass Gap 3-23mm H456S2025H-seal For Shower Door 4-6mm Glass Gap 3-23mm H456S2025

H-seal For Shower Door 4-6mm Glass Gap 3-23mm H456S2025

£29.99
£35.99 £29.99
4mm-6mm Glass F Shape Seal Gap 11-14mm F456S84mm-6mm Glass F Shape Seal Gap 11-14mm F456S8

4mm-6mm Glass F Shape Seal Gap 11-14mm F456S8

£32.70
£35.99 £32.70
4-6mm Glass F Shape Seal Gap 15-22mm F456S124-6mm Glass F Shape Seal Gap 15-22mm F456S12

4-6mm Glass F Shape Seal Gap 15-22mm F456S12

£32.70
£35.99 £32.70
F Shape Shower Door Seal 4-6mm Glass Thickness Gap 18-28mm F456S15F Shape Shower Door Seal 4-6mm Glass Thickness Gap 18-28mm F456S15

F Shape Shower Door Seal 4-6mm Glass Thickness Gap 18-28mm F456S15

£32.70
£35.99 £32.70
Sliding Shower Door Vertical Seal Strip 4-6mm Glass Gap 23-38mm F456S20Sliding Shower Door Vertical Seal Strip 4-6mm Glass Gap 23-38mm F456S20

Sliding Shower Door Vertical Seal Strip 4-6mm Glass Gap 23-38mm F456S20

£32.70
£35.99 £32.70
4-6mm Glass Sliding F-shape Seal Gap: 31-67mm F456S25354-6mm Glass Sliding F-shape Seal Gap: 31-67mm F456S2535

4-6mm Glass Sliding F-shape Seal Gap: 31-67mm F456S2535

£32.70
£35.99 £32.70
4-6mm Glass Sliding Seal Gap 24-47mm FD456S10154-6mm Glass Sliding Seal Gap 24-47mm FD456S1015

4-6mm Glass Sliding Seal Gap 24-47mm FD456S1015

£32.70
£35.99 £32.70
4-6mm Glass Sliding F-Shape Seal Gap 28-57mm FD456S20254-6mm Glass Sliding F-Shape Seal Gap 28-57mm FD456S2025

4-6mm Glass Sliding F-Shape Seal Gap 28-57mm FD456S2025

£32.70
£35.99 £32.70
8mm-10mm Glass F Shape Seal Gap 11-14mm F810S88mm-10mm Glass F Shape Seal Gap 11-14mm F810S8

8mm-10mm Glass F Shape Seal Gap 11-14mm F810S8

£32.70
£35.99 £32.70
8-10mm Glass F Shape Shower Seal Gap 15-21mm F810S128-10mm Glass F Shape Shower Seal Gap 15-21mm F810S12

8-10mm Glass F Shape Shower Seal Gap 15-21mm F810S12

£32.70
£35.99 £32.70
F Shape Shower Door Seal 8-10mm Glass Gap 18-28mm F810S15F Shape Shower Door Seal 8-10mm Glass Gap 18-28mm F810S15

F Shape Shower Door Seal 8-10mm Glass Gap 18-28mm F810S15

£32.70
£35.99 £32.70
8-10mm Glass F Shape Seal Gap 23-38mm F810S208-10mm Glass F Shape Seal Gap 23-38mm F810S20

8-10mm Glass F Shape Seal Gap 23-38mm F810S20

£32.70
£35.99 £32.70
8mm-10mm Glass F-Shape Seal Gap 34-67mm F810S25358mm-10mm Glass F-Shape Seal Gap 34-67mm F810S2535

8mm-10mm Glass F-Shape Seal Gap 34-67mm F810S2535

£32.70
£35.99 £32.70
8mm-10mm Glass H Shape Seal Gap 3-6mm H810S88mm-10mm Glass H Shape Seal Gap 3-6mm H810S8

8mm-10mm Glass H Shape Seal Gap 3-6mm H810S8

£29.99
£35.99 £29.99
8mm-10mm Glass H Shape Seal Gap 3-13mm H810S158mm-10mm Glass H Shape Seal Gap 3-13mm H810S15

8mm-10mm Glass H Shape Seal Gap 3-13mm H810S15

£29.99
£35.99 £29.99
8mm-10mm Glass H Shape Seal Gap 3-18mm H810S208mm-10mm Glass H Shape Seal Gap 3-18mm H810S20

8mm-10mm Glass H Shape Seal Gap 3-18mm H810S20

£29.99
£35.99 £29.99
8mm-10mm Glass H Shape Seal Gap 3-23mm H810S25358mm-10mm Glass H Shape Seal Gap 3-23mm H810S2535

8mm-10mm Glass H Shape Seal Gap 3-23mm H810S2535

From £3.48
£7.19 From £3.48
135° Vertical Shower Door Seal P045DJ

135° Vertical Shower Door Seal P045DJ

£29.99
£43.19 £29.99
135° Shower Door Side Seal for Angled Glass Panels P045SJ

135° Shower Door Side Seal for Angled Glass Panels P045SJ

£29.99
£43.19 £29.99
4-5mm 90° Glass Magnetic Seal M45A2M, Seal 9mm Gap4-5mm 90° Glass Magnetic Seal M45A2M, Seal 9mm Gap

4-5mm 90° Glass Magnetic Seal M45A2M, Seal 9mm Gap

£32.70
£38.70 £32.70
4-5mm 135° Glass Magnetic Seal M45C2M, Seal 21mm Gap4-5mm 135° Glass Magnetic Seal M45C2M, Seal 21mm Gap

4-5mm 135° Glass Magnetic Seal M45C2M, Seal 21mm Gap

£32.70
£38.70 £32.70
4-5mm Glass Magnetic Seal M45A2M, Seal 22mm Gap4-5mm Glass Magnetic Seal M45A2M, Seal 22mm Gap

4-5mm Glass Magnetic Seal M45A2M, Seal 22mm Gap

£32.70
£38.70 £32.70
4-5mm Glass Magnetic Seal M45B2M, Seal 22mm Gap4-5mm Glass Magnetic Seal M45B2M, Seal 22mm Gap

4-5mm Glass Magnetic Seal M45B2M, Seal 22mm Gap

£32.70
£38.70 £32.70
4-5mm Glass Magnetic Seal M45C2M, Seal 22mm Gap4-5mm Glass Magnetic Seal M45C2M, Seal 22mm Gap

4-5mm Glass Magnetic Seal M45C2M, Seal 22mm Gap

£32.70
£38.70 £32.70
6-8mm 90° Glass Magnetic Seal M68A2M, Seal 8mm Gap6-8mm 90° Glass Magnetic Seal M68A2M, Seal 8mm Gap

6-8mm 90° Glass Magnetic Seal M68A2M, Seal 8mm Gap

From £3.48
£4.20 From £3.48
Bi-fold Shower Door Vertical Seal Replacement 6mm Glass D06Bi-fold Shower Door Vertical Seal Replacement 6mm Glass D06

Bi-fold Shower Door Vertical Seal Replacement 6mm Glass D06

£29.99
£38.70 £29.99
6-8mm 135 Degree Vertical Shower Seal Gap 3-17mm, 135A68S206-8mm 135 Degree Vertical Shower Seal Gap 3-17mm, 135A68S20

6-8mm 135 Degree Vertical Shower Seal Gap 3-17mm, 135A68S20

£29.99
£38.70 £29.99
6-8mm 135° Glass Magnetic Seal M68C2M, Seal 19mm Gap6-8mm 135° Glass Magnetic Seal M68C2M, Seal 19mm Gap

6-8mm 135° Glass Magnetic Seal M68C2M, Seal 19mm Gap

£32.70
£38.70 £32.70
6-8mm Glass Magnetic Seal M68B2M, Seal 19mm Gap6-8mm Glass Magnetic Seal M68B2M, Seal 19mm Gap

6-8mm Glass Magnetic Seal M68B2M, Seal 19mm Gap

From £3.48
£4.20 From £3.48
6-8mm Glass Magnetic Seal M68A2M, Seal 22mm Gap6-8mm Glass Magnetic Seal M68A2M, Seal 22mm Gap

6-8mm Glass Magnetic Seal M68A2M, Seal 22mm Gap

From £3.48
£4.20 From £3.48
6-8mm Glass Magnetic Seal M68C2M, Seal 22mm Gap6-8mm Glass Magnetic Seal M68C2M, Seal 22mm Gap

6-8mm Glass Magnetic Seal M68C2M, Seal 22mm Gap

£32.70
£38.70 £32.70
8mm Glass Bi-fold Side Seal D088mm Glass Bi-fold Side Seal D08

8mm Glass Bi-fold Side Seal D08

£29.99
£38.70 £29.99
double shower door seal stripdouble sided for shower door sweep

Double Shower Door Seal Strip For 10mm Glass D010

From £3.59
£38.70 From £3.59
10mm 90° Glass Magnetic Seal M10A2M, Seal 6mm Gap10mm 90° Glass Magnetic Seal M10A2M, Seal 6mm Gap

10mm 90° Glass Magnetic Seal M10A2M, Seal 6mm Gap

From £3.48
£4.20 From £3.48
10mm 135° Glass Magnetic Seal M10C2M, Seal 19mm Gap10mm 135° Glass Magnetic Seal M10C2M, Seal 19mm Gap

10mm 135° Glass Magnetic Seal M10C2M, Seal 19mm Gap

From £3.48
£4.20 From £3.48
135 Degree Shower Door Seal 10mm Glass 135A10S20135 Degree Shower Door Seal 10mm Glass 135A10S20

135 Degree Shower Door Seal 10mm Glass 135A10S20

£29.99
£38.70 £29.99
10mm Glass Magnetic Seal M10B2M, Seal 20mm Gap10mm Glass Magnetic Seal M10B2M, Seal 20mm Gap

10mm Glass Magnetic Seal M10B2M, Seal 20mm Gap

From £3.48
£4.20 From £3.48
10mm Glass Magnetic Seal M10C2M, Seal 22mm Gap10mm Glass Magnetic Seal M10C2M, Seal 22mm Gap

10mm Glass Magnetic Seal M10C2M, Seal 22mm Gap

From £3.48
£4.20 From £3.48
10mm Glass Magnetic Seal M10A2M, Seal 22mm Gap10mm Glass Magnetic Seal M10A2M, Seal 22mm Gap

10mm Glass Magnetic Seal M10A2M, Seal 22mm Gap

From £3.48
£4.20 From £3.48
For Fixed Glazing Multi-purpose Bottom Vertical Seal RY2652For Fixed Glazing Multi-purpose Bottom Vertical Seal RY2652

For Fixed Glazing Multi-purpose Bottom Vertical Seal RY2652

From £14.88
£26.70 From £14.88
Shower Door Bulb Seal For 8mm Glass D08S7Shower Door Bulb Seal For 8mm Glass D08S7

Shower Door Bulb Seal For 8mm Glass D08S7

£29.99
£35.99 £29.99
Shower Door Bulb Seal For 10mm Glass D10S7Shower Door Bulb Seal For 10mm Glass D10S7

Shower Door Bulb Seal For 10mm Glass D10S7

From £3.48
£35.99 From £3.48
T Shaped Magnetic Shower Door Seal RY2806T Shaped Magnetic Shower Door Seal RY2806

T Shaped Magnetic Shower Door Seal RY2806

£32.70
£38.70 £32.70

Vertical vs Magnetic Seals — What’s the Difference?

Both are used on the sides of shower doors to stop leaks — but they work differently.

  • Vertical Seals (Non-Magnetic):
    Simple, budget-friendly seals.
  • Magnetic Seals
    These snap shut with magnets, creating a tighter seal. They cost a bit more but offer stronger, longer-lasting protection.

If your shower has two doors that meet in the middle, or 180 degree sliding door, go magnetic.

For other panel or lower budgets, vertical seals work well.

Buy Magnetic Seals

Vertical Shower Door Seal Strip Replacement

Over time, vertical seal strips can harden, loosen, or grow mold — causing water leaks and reduced performance.

Learn how to replace vertical shower door seals, in our step-by-step guide — or simply click the video on the right to watch the full replacement process in action.
Replacement Article

FAQ

At SIMBA, we offer a full range of vertical frameless shower door seals made from durable, anti-yellowing PVC.

All tested for up to 30,000 open-and-close cycles.

Vertical seals sit between the edges of your sliding glass panels. F-type or H-type, magnetic simply describes the shape. They stop water splashing from the sides.

Learn more about sliding shower door seal

No, the term 'universal' is misleading for vertical seals.

Unlike some bottom seals, the vertical side seal must precisely match two things: your glass thickness (e.g., 6mm, 8mm, 10mm) AND the gap size between the glass and the wall/frame.

Installing a 'universal' seal that doesn't fit the exact gap will lead to constant leaks or difficulty closing the door.

Definitely not.

Always fit the side seal first, trim the bottom seal to fit the overlap, and finish with a T-Shape threshold seal for guaranteed dryness.

Learn more about Bottom or Vertical Shower Seals Which First?

4mm-6mm Glass H Shape Seal Gap 3-18mm H456S20
From £3.48
£7.19 From £3.48
UK Best-Fit 6mm Glass Gasket For Bottom Of Shower Door - Zero Gap (S6DTL)
From £3.48
£20.88 From £3.48

Matki, Kudos, Merlyn Alternative: Certified Vertical Seals

SIMBA vertical seals are the perfect replacement solution for your Matki, Kudos, Merlyn, and Screwfix shower doors.

Our seals are compatible with 99% of UK shower brands and deliver the expert fit, precise matching, and 30,000-cycle certification you need.

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We also carry a wide selection of vertical shower door seal strips, including magnetic, bottom seals options for sliding doors, and those made specifically for frameless shower enclosures.
UK Best-Fit 6mm Glass Gasket For Bottom Of Shower Door - Zero Gap (S6DTL)UK Best-Fit 6mm Glass Gasket For Bottom Of Shower Door - Zero Gap (S6DTL)

UK Best-Fit 6mm Glass Gasket For Bottom Of Shower Door - Zero Gap (S6DTL)

From £3.48
£20.88 From £3.48
4-6mm Glass Bulb Seals Gap 7mm D456S74-6mm Glass Bulb Seals Gap 7mm D456S7

4-6mm Glass Bulb Seals Gap 7mm D456S7

From £14.88
£21.00 From £14.88
4-6mm Glass Bulb Seals Gap 12mm D456S124-6mm Glass Bulb Seals Gap 12mm D456S12

4-6mm Glass Bulb Seals Gap 12mm D456S12

From £14.88
£21.00 From £14.88
Shower Door Vertical Bubble Seal & Fin 4-6mm Glass Gap 15mm DA456S15Shower Door Vertical Bubble Seal & Fin 4-6mm Glass Gap 15mm DA456S15

Shower Door Vertical Bubble Seal & Fin 4-6mm Glass Gap 15mm DA456S15

From £14.88
£21.00 From £14.88
4mm-6mm Bottom Seal Gap 9-12mm V456S124mm-6mm Bottom Seal Gap 9-12mm V456S12

4mm-6mm Bottom Seal Gap 9-12mm V456S12

£14.88
£20.88 £14.88
4mm-6mm Bottom Seal Gap 13-16mm V456S164mm-6mm Bottom Seal Gap 13-16mm V456S16

4mm-6mm Bottom Seal Gap 13-16mm V456S16

£14.88
£20.88 £14.88
4mm-6mm Bottom Seal Gap 17-20mm V456S204mm-6mm Bottom Seal Gap 17-20mm V456S20

4mm-6mm Bottom Seal Gap 17-20mm V456S20

£14.88
£20.88 £14.88
4-6mm Walk-In Shower door bottom seal Gap 20-23mm V456S2023 4-6mm Walk-In Shower door bottom seal Gap 20-23mm V456S2023

4-6mm Walk-In Shower Door Bottom Seal Gap 20-23mm V456S2023

£14.88
£20.88 £14.88