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  • 2000L Underdeck Water Tank
  • UDWT2000 Spec Sheet

2000L Underdeck Water Tank ‘Tall’

Product Code: UDWT2000

Rotoplas 2000L Underdeck Water Tank
2400mm long
1200mm wide
850mm high
Strong design and exceptionally durable
Available in 20+ colours!

Quick Links:
Specification Sheet Catalogue Installation Instructions Colour Chart Freight Details


This 2000L underdeck water tank is a great choice for saving water out of sight. It is a narrow tank to fit neatly between piers and bearers, and measures 2400mm long x 1200mm wide x 850mm high. This means you can install it under a deck to keep your water tank out of sight and out of the way, which frees up space in your yard! It is a trendy design and is super strong. This 2000L underdeck water tank is easy to lift and position where you need it. You can even add more capacity later by connecting this tank to another one if you need to!


  • A neat looking tank in the space saving underdeck style
  • A 10 year manufacturers’ warranty for your peace of mind
  • Long lasting durability with food grade tank material certified to AS/NZS 4766.
  • A strong design with a self-supporting roof. The ribbed wall makes it extra strong!
  • A narrow tank for making the best use of space. It’s only 1200mm wide!
  • Your choice of over 20 popular Colorbond colours to match your home! Check out the ‘Additional Information’ tab for the full list of colour options.


The inlet comes fitted with a 400mm mosquito proof leaf strainer and cover in the centre of the roof.
2x 25mm BSP plastic outlets are moulded into the tank at each end at the base of the tank.
An overflow provision is moulded into the tank at each end and a 90mm mosquito proof overflow is supplied loose.

Why do people buy underdeck water tanks?

People mainly buy underdeck water tanks when they don’t have the available space anywhere else to put a tank. Some homes are built on difficult blocks with steep gradients and therefore have limited flat space for other types of tanks which require a large level site. However, what they do have are retaining walls, decks, and split levels, which often provide space beneath for tanks.

In some cases, people just buy underdeck water tanks because they would prefer to keep them out of sight and out of the way. This can be an attractive option because their tanks are less exposed to build up of leaf litter or debris.

Additional information

Dimensions 2400 × 1200 × 850 mm

Woodland Grey, Windspray, Ironstone, Basalt, Monument, Night Sky, Terrain, Manor Red, Cottage Green, Pale Eucalypt, Wilderness, Mangrove, Evening Haze, Classic Cream, Wheat, Cove, Paperbark, Gully, Jasper, Deep Ocean, Surfmist, Dune, Shale Grey, Wallaby

Delivery Area

ACT, Blue Mountains, Central Coast, Greater Western Sydney, Hunter, Illawarra, Newcastle, North Sydney, Shoalhaven, South Coast, South Sydney, Southern Highlands, Sydney City

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