450 litres
The largest tank on this shelf by half again, and the reason to look at it is a
July with no rain.
Every smaller butt here cycles: it fills in a shower, empties over a few days,
and waits. In a dry fortnight that means a butt that has been empty for ten days
while the garden needed it most.
Four hundred and fifty litres is enough to carry a garden through a dry spell
rather than through a weekend, and it is the point at which stored rainwater
stops being a gesture.
About 0.42 € per litre
Across this shelf the range is roughly 0.25 € to 0.56 € per litre.
This sits below the middle — cheaper per litre than four of the six smaller tanks
here, which is the usual shape of storage: capacity gets cheaper as it gets
bigger, because the tap, the lid and the moulding cost the same either way.
77.5 × 57.3 cm, and 115 cm tall.
That is 0.444 m² of ground, and 450 litres over it works out at about
1,013 litres per square metre.
Across the five butts here with published dimensions the same figure runs 707,
739, 868, this 1,013, and 1,250. So it is dense — second only to the flat-backed
300-litre wall tank, and comfortably ahead of the round barrels.
And then the 30 centimetres
The listing states a minimum distance of 30 cm from the house wall, in two
separate places.
It does not explain why, and the practical consequence is what matters: the
real ground this tank occupies is its own 57 cm of depth plus 30 cm of
clearance behind it.
That is not a narrow side passage. The flat-backed tank on this shelf is 40 cm
deep and designed to sit against the wall; this needs nearly 90 cm of depth all
told.
It is a tank for an open corner, a garden wall, or the end of a drive — not for
the gap between a house and a fence.
The four threaded holes, and the one that matters
Two at 10 cm, left and right. One frontal at 38 cm.
The 38 cm boss is the best answer on this shelf to the problem nobody’s listing
states: a full watering can is 30 to 35 cm tall, and a tap low on a tank standing
on the ground cannot fill one.
A threaded outlet already moulded at 38 cm means a tap that clears a can, on the
ground, with no plinth, no blocks and no drilling.
The 10 cm bosses are the other half: low enough to empty the tank almost
completely before a frost, which is the whole of the winter maintenance on this
shelf.
Four positions also means you can have a tap on one side, a hose on the other,
and a link to a second tank at the front — without drilling anything, which on a
tank this size is worth a great deal.
Linking tanks
Named twice in the listing, and only here on this shelf.
Connect a second tank low down and the two equalise: the collector fills both,
the tap draws from both, and 450 litres becomes 900 with one hose and two
fittings.
It is the standard way rainwater storage is scaled, and it is a better answer
than buying one enormous tank — two 450s can go in two different places, and one
can be drained while the other stays in use.
The winter instruction, in detail
“In winter, empty it and store the plastic tap separately, or protect it with a
plastic cover.”
The second half is the part other listings leave out.
Water expands as it freezes and will damage any tank. But the part that actually
breaks first is the tap: a thin plastic body full of water, sticking out into
the air, with nothing around it. It cracks at the first hard frost and the tank
is fine.
Taking it off and putting it in a drawer costs nothing and saves the one part
that fails.
Anchoring, and the freight delivery
Two more sentences worth reading before buying.
“Tall tanks are best anchored directly to the wall.” At 115 cm tall and 57 cm
deep, full, this is stable; empty, in a gale, it is a large light box, and it
is the empty tank in February that goes over.
“Delivery by freight.” A 450-litre tank does not arrive with the post. That means
a delivery slot, a kerbside drop, and moving something 77 cm wide through
whatever gap leads to the garden — which is worth measuring before ordering
rather than after.
And what is not included
No rain collector.
Five of the seven butts on this shelf omit one, and it is the part that connects
a tank to a roof. Without it, 450 litres fills from the rain that lands on the
lid.
One listing on this shelf includes a collector that filters the inflow and stops
diverting when the tank is full, and it is also the only one that states the roof
area it suits — up to 50 m². For a 450-litre tank, that figure is the one worth
establishing before choosing a collector.
Availability
Around 190 €, read at the German Amazon store on the day of the survey.
Listed and unsold: the British, French, Italian and Spanish Amazon catalogues hold the reference with nobody behind it.
Nothing came back from the American Amazon store at all; the buy button there runs a search rather than opening an empty page.
Taken from Keepa on the day this page was last revised; stock and prices move without notice.
Prices quoted in this text were read on 26 September 2026. The live price is at the top of the page.
