This innovative tank is an outstanding solution for storing oil in spaces where every centimetre counts. Its smart design allows for easy installation in confined areas, making it the perfect choice for those with limited space.

Crafted from Medium Density Polyethylene (MDPE), the tank is highly resistant to corrosion, ensuring both durability and a long lifespan. With its fully bunded construction, it provides an extra layer of security to prevent leaks, thus safeguarding the environment and ensuring compliance with all pertinent UK regulations. Designed for practicality, the tank features convenient handles and a heavy-duty lid, facilitating easy manoeuvring and strong protection. It can accommodate an electronic contents gauge, enabling straightforward monitoring of its contents. Adding to your peace of mind, Harlequin backs this product with a 10-year guarantee upon registration, offering reassurance and reliability for years to come.

Product Details:

  • Capacity: 1400L
  • Integrally bunded to prevent leaks and damage
  • Made from non-corrosive Medium Density Polyethylene
  • Features handles and a heavy-duty lid for easy handling
  • 10-year guarantee available upon registration
  • Compliant with relevant UK regulations
  • Compatible with electronic contents gauge (sold separately)
  • Length: 2110mm
  • Width: 640mm
  • Overall Height: 1670mm

Additional Information:

  • Delivery excludes Channel Islands, Isle Of Man & Scottish Islands
  • Kerbside delivery only - Off-load and positioning of the tank will be the responsibility of the customer
  • Adequate access is required to the delivery address. Please contact us prior to ordering if restrictions may apply


£4.99 Standard Delivery, or FREE on most orders over £99* (some exclusions apply)

£9.99 Next day delivery is available for orders places before 12 noon. Any orders placed for next day delivery after this time, will take 2 working days to be delivered.

Working/delivery days are Monday to Friday, deliveries will not normally be made Saturday or Sunday.

We offer a 30-day returns policy on on the majority of our items*, as long as the item is unused, undamaged and unopened**. We only ask that the postage is covered by yourself. 


* Please see our delivery page for further details on specific exceptions.

** Some products that are made to order or personalised cannot be returned.

***Exclusions apply for items shipped directly from our suppliers, and some big & bulky items may incur an additional charge. Please see our delivery page for full details. 

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Harlequin 1400L Super Slimline Diamond Tank with Tank Pack - 1400SSL

  • £2,046.55
  • (Delivery from £4.99 )
Item in Stock   |   Usually dispatched within 24 hours
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Free UK Delivery on most orders over £99
Delivery Rates & Information

Delivery Options

Standard Delivery: £4.99 - Free for all orders over £99.*
Next Day Delivery: £9.99 - Available for orders placed before 12:00 PM (Noon).

Important Delivery Notes

Next Day Delivery Cut-off: Orders placed after 12:00 PM (Noon) using Next Day Delivery will be delivered within two working days.
Working Days: Our standard delivery and shipping days are Monday through Friday. We do not normally deliver on Saturdays or Sundays.

Easy 30-Day Returns

We want you to be happy with your purchase! We offer a 30-day returns policy on all items, provided the following conditions are met:
  • The item is unused and undamaged.
  • The item is returned in its original packaging.
  • The customer is responsible for the return postage costs.

Combining Your Order

We always strive to combine your order into a single delivery. However, your order may arrive in multiple shipments if it contains:
  • Items from different warehouses (Standard items).
  • 'Direct' items (These are shipped separately and directly from the supplier) and will arrive separately from other items in your order.

*Exclusions & Additional Charges

The following items may be excluded from standard shipping rates or may incur extra delivery charges:
  • Items Shipped Directly from Suppliers ('Direct' items).
  • Certain Large or Bulky Items.
Want it by Friday 23rd October? Order within 4 hours, 2 minutes