Garantia Slim Stone-Effect Wall Tank – 510 L, Graphite Grey

This 510L Slim Stone Decor Wall Tank offers serious water storage capacity without the bulk, ideal if you're after a high-output butt that still looks the part. Manufactured by Graf, sold under their Garantia range, it's built entirely from 100% recycled plastic, with UV-stable, weather-resistant construction that's made to last outdoors year-round.

The stacked stone wall finish in Graphite Grey means you don't need to tuck this one out of sight — it works as a feature in its own right rather than something to hide behind the shed.

Key features

• Slim, wall-mounted profile – fits neatly against urban or rural garden walls without eating up space

• High-output brass-coloured tap included – fills a watering can in seconds, no waiting around

• 510L capacity – collects a substantial volume of naturally soft rainwater for the garden

• 100% recycled plastic construction – UV-stable and weather-resistant

• Stacked stone effect finish – a decorative alternative to a standard plain water butt

Connecting to your downpipe

A downpipe diverter is required separately — add one to your order below. If you're connecting to a square downpipe, you'll need the Square Downpipe Diverter specifically.

Per Graf's installation guidance: "The water butts do not come predrilled. This product is very easy to use and can be drilled in by anyone. Simply attach the drill bit onto your drill and begin drilling – remember you must drill the hole in the water butt at the same level as the hole in the downpipe! As long as the holes drilled in both the water butt and the downpipe are level, the water will continue down the downpipe when the water butt is full."