Discover the 400L Underground Water Tank from PipeTech, UK-made from premium virgin polymer for durability. Its one-piece mould provides extra strength, and the extended neck can be trimmed to your needs. Trust PipeTech for quality and local craftsmanship in water storage solutions. PipeTech's 400-litre Underground Water Tank is highly durable and reliable, thanks to its rotationally moulded design. It fits UK standard 4" (110mm) pipe fittings and can be connected with other tanks for more storage. The undrilled ¾'' BSP outlet allows easy pump connections. Our tanks come with a 10-year warranty against manufacturing defects for guaranteed performance and peace of mind. LxWxH - 1240mm x 345mm x 1500mm.