This below ground rainwater EcoBloc Maxx attenuation crates are an excellent solution for drainage areas for which SUDS . Perfect for areas where infiltration is possible due to due good drainage conditions (sand, silt, gravel etc.). If you do not have these conditions please see our attenuations tanks. The EcoBloc Maxx is suitable for vehicle loading.
This package provides the perfect solution to satisfy planning and building control.
- EcoBloc Maxx crates
- Light base plates
- Light end plates
- Non Woven Geotextile NW8 100g/m2
- Full installation instructions
If you require a calculation to confirm the size of your please confirm the following:
Collection area - m2
Infiltration rate of soil/soil type: -m/ if the infiltration test has been completed if not description sand, silt clay etc.
Loading required - Pedestrian or Vehicle
Features and Benefits
High storage volume
GRAF infiltration modules have three times the storage volume of a standard gravel infiltration ditch. One module therefore takes the place of around 1300 kg (1,4 tons) of gravel or a 50 m (164') drainage pipe. Since you don‘t have to excavate so much soil and enjoy great value for money compared with a standard gravel infiltration ditch, the GRAF modules save hard-earned cash!
Service life of over 50 years
A durable product design ensures sustainability. The GRAF EcoBloc system and the Vario 800 flex shaft system for a service life of over 50 years.
Easy to install
The modules are fitted simply, at speed and in various ways. They can be installed without heavy machinery – one EcoBloc Inspect flex module weighs just 8 kg (17.6 lbs), only 7 kg (15.4 lbs) for one EcoBloc Maxx unit.
Up to 97 % reservoir volume
The GRAF EcoBloc Maxx has a gross volume of 225 (59.4 US gal.) and a reservoir volume of 219 (57.9 US gal.). With a reservoir volume in excess up to 97 %, it is a market-leading product. The EcoBloc variants and Inspect flex still offer a reservoir coefficient of 96 % despite their high load-bearing capacity.
Installation depth of up to 4m
Even under very heavy loads, GRAF EcoBloc Maxx modules can be installed at a depth of up to 4 (13'1.4"). This means that up to 9 layers are possible. Please consult GRAF when the installation depth is greater than 4 .
- 5 years warranty
The EcoBloc base plate forms the foundations of each EcoBloc system. Up to 10 EcoBloc modules can be fitted on one base plate.
The side faces are sealed with EcoBloc end plates. The EcoBloc system can be adapted to match individual requirements.
Some lead times may be extended due to consecutive bank holidays.
We will close for Christmas on 20th December at 4:30pm and re-open on 3rd January 2024 at 9:00am.
We're currently experiencing unprecedented demand, please bear with us while we work hard to fulfill your orders. 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/Tuffnells 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, direct or 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.