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Harcostar 350 litre Magnum Water Butt Kit


A premium brand that offers the highest quality, the Harcostar 350 Litre Magnum Water Butt Kit stores an incredible 350 litres of rainwater and is ideal for large gardens.

Channel the rainwater which falls on the roof of your home directly into the water butt, via the enclosed Harcostar Universal Rain Trap, which can then be used for watering the garden or other outdoor jobs.

Fitted with a spring operated, child-safe lid, the kit includes a Harcostar Universal Rain Trap to connect to almost any size of plastic downpipe.

Made in the UK with a five-year guarantee, this kit is supplied pre-drilled with easy-to-follow instructions, meaning that fitting your Harcostar 350 Litre Magnum Water Butt Kit couldn't be simpler. It also comes with a hose connerctor tap.

The Harcostar 350 Litre Magnum Water Butt Kit is made in the UK using recycled plastic and all accessories are designed to be fitted with ease.

The Harcostar Universal Rain Trap fits standard 68mm, 80mm and 100mm round plastic downpipes and 65mm square plastic downpipes. Not suitable for cast iron downpipes.

Optional accessories available here Optional Harcostar Fast Flow Tap available here

We cannot guarantee that the appearance and/or colour of Goods shown in our promotional literature or on our website exactly reproduce the appearance and/or colour of the physical Goods themselves.

When setting up your water butt, please ensure that the full unit is sited on a flat, solid surface with no overhang or unevenness.


Harcostar water butt specification
ModelCapacity (l)Height (mm)Height With Stand (mm)Diameter (mm)
Harcostar 114 Litre Water Butt Kit114680950510
Harcostar 168 Litre Water Butt Kit1688201090580
Harcostar 227 Litre Water Butt Kit2279901260600
Harcostar 350 Litre Magnum Water Butt3501200N/A780
Harcostar Diverter fitting instructions
Out of stock Low stock In stock
incl. VAT
Reviews (4)
  • Good water butt and service from even greener 1/1/2021
    A solid water butt but as another reviewer has said, the connecting house isn't very long. The one supplied is ok but it means the butt has to be very near to the downpipe it's supplied from. I am disappointed though that the kit doesn't include a tap - even though one is shown in the advert.
  • Insufficient hose. 12/2/2019
    Purchasing the water butt and delivery all went ok. But then found that the length of hose included was nowhere near adequate and I had to purchase an extra 1m length at £6.99 + delivery. Surely the majority of customers would require the 1m length with this size of water butt and so would make common sense to include that in the initial pack rather than customers having to re-order and pay postage again !! plus the hassle factor involved, which is unnecessary.
  • You get what you pay for with this imho. 6/12/2019
    This is a well made water butt. The pre-drilled holes, whilst not essential, are a nice feature, and are reinforced at this point unlike some cheaper butts. Delivery was timely, well ahead of the estimated delivery time. A barrel to barrel connector kit would have been a nice cherry on top :)). Note: the price on Amazon went up 50% within 3 weeks of my ordering it. I would not have purchased it at that price, I would have gone for a cheaper option.
  • Excellent. 4/30/2018
    I have had four of these butts for the past 10 years, and they are brilliant. At first, I used to drain them off in the autumn and store them over winter, until I discovered that even with temperatures below -10c the frozen water inside does not damage the butt.