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(mm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"124\"\u003e\u003cstrong\u003eHeight (mm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"108\"\u003e\u003cstrong\u003eWeight (kg)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"107\"\u003e\u003cspan\u003e340030\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd width=\"108\"\u003e650\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd width=\"118\"\u003e550\u003c\/td\u003e\n\u003ctd width=\"124\"\u003e650\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd width=\"108\"\u003e14\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"column first\"\u003e\n\u003cdiv class=\"box act\" id=\"bgh979\" data-id=\"979\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e"}

Graf Optimax Filter External

£399.00
Maximum quantity available reached.
For the majority of SuDS and rainwater harvesting applications pre filtration is required to remove silt and organic matter from the system to prevent blockage and poor performance.
Features and Benefits: 
  • External filter to clean the rainwater before the tank
  • Available for pedestrian loading and for vehicle loading
  • Provides over 95 % water yield
  • Low maintenance as it is self cleaning
  • Continuously variable installation depth of 580 - 1,050 mm (22.8 - 41.3") using the telescopic dome shaft
  • Minimal height offset (200 mm) between the inlet and outlet
  • Maximum roof surface area of 350 m² with connections DN 100 and 750 m² with DN 150. 
  • Very smooth surface and therefore max. self-cleaning, mesh wide 0.35 mm (0.01")
  • Optional with cleaning unit external

Universal-Filter 3 external, suitable for pedestrian loading

order no.

Length (mm) Ø max. (mm) Height (mm) Weight (kg)
340030 650
550 650
14
There is no additional documentation for this product

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.) 
The following items have a 2-4 week lead time:
    • Prestige Grit Bins
    • Prestige Square planters (Please get in touch)
    • 180l Washed Terracotta Planter
    • Cascata Water butt
    • Agua Water butt
    The following items (EU) are purchased on a pre order basis with a potential 4-8 weeks lead time:
      • Hydraloop
      • Grey Fountain Bowl
      • 100l Manhattan Black, Grey, White
      • All Ecosoft Items (Please email to confirm stock)
      • Noblesse - Charcoal
      • 3P Large Water butt - Water Pillar - 800l with quality filter and tap
      The following items (EU) are purchased on a pre order basis with a potential 6-8 week lead time:
      • 200l slim wall hung water butt
      The following items (EU) are purchased on a pre order basis with a potential 8-12 week lead time:
      • Column 500L - Green

      The following items (EU) are purchased on a pre order basis with a potential 12 week lead time:

      • Design (circular and modern) water butt stands
      • 700 Litre D Shape Water Tank
        2. General Delivery information

        We're a Manchester based company and ship to the UK at our standard rates. Please get in touch if you are based in the Highlands, UK island or Northern Ireland, surcharges may apply. 

        We no longer support ordering from the EU and NI 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.

        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 2-5 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.