3P Wall Tank 800 Litres – Slim, Professional-Grade High-Capacity Rainwater Storage

The original and class-leading slim wall tank — the 3P Wall Tank delivers 800 litres of rainwater storage in a remarkably compact footprint. Specified by professionals across garden, fire water, and commercial markets where bulk storage and minimal depth are non-negotiable, it sets the standard that others are measured against. Built to last, engineered to perform, and available in five contemporary colours.

Key Features

• 800-litre capacity — high-volume rainwater storage in a slim, space-efficient form
• The original class-leading slim wall tank design — trusted and specified by professionals across garden, fire water, and commercial applications
• Exceptionally robust construction — 36kg shot weight with 8mm thick walls for superior strength and long-term durability
• Available in five colours: Black, Grey Granite, Blue Grey Granite, Sand, and Green — Granite, Sand, and Green feature an attractive fleck finish for added visual depth
• Inter-linkable — connect multiple units side by side to create virtually unlimited rainwater storage capacity
• 3 x ¾" BSP metal threads — robust, corrosion-resistant connections built for professional-grade installations:
  • 1 × tap point (approx. 30cm from ground)
  • 2 × interconnection or drain-down points near the base (either side)
• Tap not included — customers can select a ¾" tap separately to suit their preferred aesthetic; see our tap accessories range
• Multi hole-saw set and rubber grommets included — for a clean, professional installation
• Wall fixing bracket and screws included — secure flat-to-wall mounting for stability and a neat finish
• Compatible with Filter Collector — recommended for clean, filtered rainwater collection
• UV-resistant recyclable PE plastic — maintains colour and performance without fading or degrading over many years of outdoor use

Technical Specifications

• Capacity: 800 litres
• Height: 179cm
• Width: 80cm
• Depth: 60cm
• Wall thickness: 8mm
• Shot weight: 36kg
• Connection points: 3 × ¾" BSP metal threads — 1 × tap point (approx. 30cm from ground), 2 × interconnection/drain-down points near base (either side)
• Recommended filter: Filter Collector
• Supplied accessories: Multi hole-saw set; rubber grommets; wall fixing bracket and screws
• Tap: Not supplied — available separately
• Colours: Black / Grey Granite / Blue Grey Granite / Sand / Green
• Material: UV-resistant, recyclable polyethylene (PE)

Scale Your Storage Effortlessly

With dual side-mounted interconnection points, multiple 3P Wall Tanks can be linked together along any wall or boundary — delivering thousands of litres of combined rainwater storage within a consistent 60cm depth. The preferred solution for professionals who need serious capacity without sacrificing space.