Zen15 XXL Undermount Sink by The 1810 Company
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Zenduo 15 340/550U XXL Deep BBR Undermounted Zenduo 15 340/550U XXL Deep BBR Undermounted

Every Zen15 XXL model.

4 models
ModelCodeFinishSize · min. cabinetPrice
Zenduo 15 340/550U XXL Deep BBR Undermounted, ZD/3455U15DSXXL504 Zenduo 15 340/550U XXL Deep BBR UndermountedIn stock · order by 12 noon for next working day dispatch ZD/3455U15DSXXL504 Stainless steel 965 × 510 × 254mm · min. cabinet 1000mm £797.60RRP £997
  • Undermounted 15mm radius handmade bowl- Includes clips for flush or inset installation- Satin finish- Insusound®- 3 ½” basket strainer waste and overflow included- Individually boxed- Steel thickness 1.2mm- Maximiser plumbing kit included- Note: This range of sinks won’t fit into a standard 600mm depth worktopAdditional Information:- Bowl Configuration:2 Bowls- Installation: Inset, Undermount, Flush- Material: Stainless Steel- Minimum Sink Cabinet Size: 1000mm- Bowl Type: Deep
  • Undermounted 15mm radius handmade bowl– Includes clips for flush or inset installation– Satin finish– Insusound®– 3 ½” basket strainer waste and overflow included– Individually boxed– Steel thickness 1.2mm– Maximiser plumbing kit included– Note: This range of sinks won’t fit into a standard 600mm depth worktopAdditional Information:– Bowl Configuration:2 Bowls– Installation: Inset, Undermount, Flush– Material: Stainless Steel– Minimum Sink Cabinet Size: 1000mm– Bowl Type: Deep
In stock. Order by 12 noon and it’s dispatched the next working day when sent on its own, or it comes with your kitchen delivery.
Zenduo 15 550/340U XXL Deep Undermount, ZD/5534U15DSXXL503 Zenduo 15 550/340U XXL Deep UndermountIn stock · order by 12 noon for next working day dispatchTechnical drawing ZD/5534U15DSXXL503 Stainless steel 965 × 510 × 254mm · min. cabinet 1000mm £797.60RRP £997
Technical drawing of Zenduo 15 550/340U XXL Deep Undermount with dimensions in mm
Technical drawing · dimensions in mm
  • Undermounted 15mm radius handmade bowl- Includes clips for flush or inset installation- Satin finish- Insusound®- 3 ½” basket strainer waste and overflow included- Individually boxed- Steel thickness 1.2mm- Maximiser plumbing kit included- Note: This range of sinks won’t fit into a standard 600mm depth worktopAdditional Information:- Bowl Configuration:2 Bowls- Installation: Inset, Undermount, Flush- Material: Stainless Steel- Minimum Sink Cabinet Size: 1000mm- Bowl Type: Deep
  • Undermounted 15mm radius handmade bowl– Includes clips for flush or inset installation– Satin finish– Insusound®– 3 ½” basket strainer waste and overflow included– Individually boxed– Steel thickness 1.2mm– Maximiser plumbing kit included– Note: This range of sinks won’t fit into a standard 600mm depth worktopAdditional Information:– Bowl Configuration:2 Bowls– Installation: Inset, Undermount, Flush– Material: Stainless Steel– Minimum Sink Cabinet Size: 1000mm– Bowl Type: Deep
In stock. Order by 12 noon and it’s dispatched the next working day when sent on its own, or it comes with your kitchen delivery.
Zenuno 15 550U XXL Deep Undermount, ZU/55/U15/DSXXL501 Zenuno 15 550U XXL Deep UndermountIn stock · order by 12 noon for next working day dispatchTechnical drawing ZU/55/U15/DSXXL501 Stainless steel 600 × 510 × 254mm · min. cabinet 800mm £547.20RRP £684
Technical drawing of Zenuno 15 550U XXL Deep Undermount with dimensions in mm
Technical drawing · dimensions in mm
  • Undermounted 15mm radius handmade bowl- Includes clips for flush or inset installation- Satin finish- Insusound®- 3 ½” basket strainer waste and overflow included- Individually boxed- Steel thickness 1.2mm- Maximiser plumbing kit included- Note: This range of sinks won’t fit into a standard 600mm depth worktopAdditional Information:- Bowl Configuration: 1 Bowl- Installation: Inset, Undermount, Flush- Material: Stainless Steel- Minimum Sink Cabinet Size: 600mm- Bowl Type: Deep
  • Undermounted 15mm radius handmade bowl– Includes clips for flush or inset installation– Satin finish– Insusound®– 3 ½” basket strainer waste and overflow included– Individually boxed– Steel thickness 1.2mm– Maximiser plumbing kit included– Note: This range of sinks won’t fit into a standard 600mm depth worktopAdditional Information:– Bowl Configuration: 1 Bowl– Installation: Inset, Undermount, Flush– Material: Stainless Steel– Minimum Sink Cabinet Size: 600mm– Bowl Type: Deep
In stock. Order by 12 noon and it’s dispatched the next working day when sent on its own, or it comes with your kitchen delivery.
Zenuno 15 750U XXL Deep Undermount, ZU/75/U15/DSXXL502 Zenuno 15 750U XXL Deep UndermountIn stock · order by 12 noon for next working day dispatchTechnical drawing ZU/75/U15/DSXXL502 Stainless steel 800 × 510 × 254mm · min. cabinet 900mm £635.20RRP £794
Technical drawing of Zenuno 15 750U XXL Deep Undermount with dimensions in mm
Technical drawing · dimensions in mm
  • Undermounted 15mm radius handmade bowl- Includes clips for flush or inset installation- Satin finish- Insusound®- 3 ½” basket strainer waste and overflow included- Individually boxed- Steel thickness 1.2mm- Maximiser plumbing kit included- Note: This range of sinks won’t fit into a standard 600mm depth worktopAdditional Information:- Bowl Configuration: 1 Bowl- Installation: Inset, Undermount, Flush- Material: Stainless Steel- Minimum Sink Cabinet Size: 900mm- Bowl Type: Deep
  • Undermounted 15mm radius handmade bowl– Includes clips for flush or inset installation– Satin finish– Insusound®– 3 ½” basket strainer waste and overflow included– Individually boxed– Steel thickness 1.2mm– Maximiser plumbing kit included– Note: This range of sinks won’t fit into a standard 600mm depth worktopAdditional Information:– Bowl Configuration: 1 Bowl– Installation: Inset, Undermount, Flush– Material: Stainless Steel– Minimum Sink Cabinet Size: 900mm– Bowl Type: Deep
In stock. Order by 12 noon and it’s dispatched the next working day when sent on its own, or it comes with your kitchen delivery.

Our prices, taken from our current online store. Delivery is added at checkout.

What you're actually buying.

The Zen15 XXL range from The 1810 Company has 4 sink models, in stainless steel. Prices start at £547.20, including VAT. On its own, delivery is £10 + VAT anywhere on the UK mainland.

Looking for an undermount kitchen sink or a stainless steel undermount sink? Zen15 XXL is one to consider.

  • Extra-large, deep bowls
  • Handmade, 15mm internal radius
  • Undermount
  • Stainless steel and PVD

The 1810 Company is a UK supplier of design-led kitchen sinks, taps and accessories, built around contemporary European styling and quality stainless steel. It sells through trade partners such as kitchen retailers, designers and installers, and ships from UK-held stock. Since March 2022 it has been part of the SCHOCK Group.

MaterialStainless steel
Finish(es)Stainless steel; PVD
InstallationUndermount
Radius corners15mm internal
Bowl optionsSingle, 1.5
Min. cabinet width800–1000mm, by model
Guarantee75 years (sinks, manufacturing defects)

Sinks carry a 75-year guarantee against manufacturing defects. Taps have 2 years on mechanical parts (5 years if particle filters are fitted) and 5 years on finishes.

Details from The 1810 Company, checked September 2026. Your designer will confirm sizes before you order.

More undermount sinks.

Common questions

Before you buy.

Which worktops suit an undermount sink?

Undermount sinks fit below the worktop for a seamless edge, so they suit solid timber, stone and solid surface worktops. Most laminate worktops need an inset sink instead.

Will this sink fit my cabinet?

Each model lists the cabinet size it needs. Check it against the width of your sink base unit before you order, or send us your sizes and we’ll check.

How much is delivery?

Sinks, taps and accessories from The 1810 Company are delivered for £10 + VAT anywhere on the UK mainland.

How quickly will it arrive?

In-stock sinks from The 1810 Company are dispatched the next working day when you order by 12 noon. Each model shows whether it is in stock, and if it isn’t we’ll confirm the delivery date when we check your order. Ordered with a kitchen, it travels with the rest of your order.

Send us your measurements. We'll send back your kitchen.

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