Carat XL SuDS rainwater attenuation underground tank
The Carat XL underground rainwater attenuation tank is an exceptionally versatile tank. It is available in sizes 8,500 and 10,000 l, combined with a lid of choice to suit requirements.
The tank is perfect for where a large storage volume is required and acts as an SuDS attenuation tank when fitted with a regulator device.
The tank can be pre fitted with flow regulation device with varying flow output as specified and so represents a plug and play attenuation solution.
Please get in touch with your stormwater attenuation requirements and we can calculate your storage requirements.
- Optimal tank geometry and statics due to CAD product development – equals highest stability
- Unique fitting accuracy of the components
- Consistent quality due to constant production monitoring
- Vehicle or lorry-bearing (combined with Telescopic dome shaft with cast iron lid or TRUCK)
- Groundwater stable up to the middle of the tank thanks to extremely stable construction
- Secure investment thanks to the market leading 15-year warranty!
- Can be expanded as required
8,500 l
order no. | Length (mm) | Width (mm) | Height (mm) | Inner Ø dome shaft (mm) | Weight (kg) |
370005 | 3500 | 2040 | 2695 | 650 | 380 |
10,000 l
order no. | Length (mm) | Width (mm) | Height (mm) | Inner Ø dome shaft (mm) | Weight (kg) |
370006 | 3520 | 2240 | 2895 | 650 | 455 |
Technical details
max. earth covering (mm) (without groundwater, vehicle loading) |
max. axle load (t) | max. vehicle weight (t) |
2000 | 8 | 3,5 /12 |
Earth covering with loading capacity (mm) | Earth covering with groundwater installation (mm) | |
800-2000 | 800 - 1800 |
Priced on Application
If your query is related to an existing order please email in with your order number in the subject line. If you have a new residential enquiry please consult the online guides before calling as they may answer your question.
The delivery information page is divided into 1. Specific and 2. General delivery information below.
1. Specific Delivery Information relating to product lines- Small items dispatched daily with RM24 ~85% arriving next day
- Large items (UK made) typically 5 - 15 working days (Parcelforce/APC etc)
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We're a Manchester based company and ship to the UK at our standard rates. Please get in touch requesting the delivery surcharge value if you are based in the Highlands or a UK island.
We no longer support ordering from the EU and Northern Ireland through the website. We can support ad hoc orders with limited liability.
Our design and Prestige range is available in the Netherlands, Ireland, Belgium, France, Germany, through our distributors.
Stock items will be dispatched on the day of order, if ordered before 1pm.
Letters are sent 1st class.
Parcels <2kg are shipped with Royal Mail 24 Tracked with the following target delivery times.
Guaranteed delivery can be arranged by advance agreement. This agreement is back to back with the courier and we will not be liable for any delays as per our terms.
A loss/replacement can only be pursued in line with the target delivery times of the courier or once the courier accept loss.
Bulky items (and pallet deliveries) are dispatched within 2-15 working days. We will request a contact number if this has not been provided at checkout.
Some items are made to order (bespoke) and details are given on the listing for dispatch times. If for any reason we anticipate a delay on our normal dispatch time we will contact you to let you know.
Occasionally there are delays. We shall not be liable for any direct or indirect losses, costs, damages or expenses incurred by you or any other person for any delays in delivery.
Missed deliveries where attempted delivery has been made usually result in re-deliveries the following day. The customer is responsible for organising re deliveries by contacting the courier direct.
Parcels/deliveries can only be "left out" if the delivering company allows that option. Parcelforce, for example, do not allow a parcel to be "left out".
We are an environment centric business and as such we try to minimise our waste. Our packaging is usually recycled and/or recyclable and we make efficient use of packaging to minimise wastage.
Covid delivery updates between 12.3.20 and 11.1.21 21 have been archived here.