GRAF

Flat Underdeck Rainwater Tank

Rigid under-deck rainwater tank (3,000 and 5,000 L). High storage per m² for protected space beneath decks and raised homes. Tank and access lid; price on request.

Brand

GRAF

Range

Rainwater

Sizes

Lid types

Size

Dimensions: L 2,450 mm · W 1,600 mm · H 1,070 mm

Lid / load class

Selected SKU

295-3000

Price on request

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Certified qualityISO 9001 · AS/NZS standards

15-year warrantyOn selected tank ranges

Recycled plasticsSustainable manufacturing

Typical applications

Residential

Commercial

Garden irrigation

Key features

More water in less floor space: about 765 L/m² (3,000 L) and 972 L/m² (5,000 L)

AU catalogue sizes: 3,000 L (Flat M) and 5,000 L (Flat L)

Scope of supply: tank plus Garantia access lid (part 202803)

Self-supporting on a flat, continuously supporting base (sand, crusher dust or concrete)

DN100 inlet and overflow seals in approved upper-body locations; lower connections for manifolded banks

Serviceable 600 mm access for inspection, cleaning and pump maintenance

Technical sizing

Size matrix & SKUs

2 technical rows - select above or quote directly

Size	Length	Width	Height	Weight	Lid / variant	Load class	Order no.	Quote
3,000 L	2,450 mm	1,600 mm	1,070 mm	130 kg	Access lid	Access lid	295115
5,000 L	2,450 mm	2,100 mm	1,340 mm	200 kg	Access lid	Access lid	295126

Nominal tank dimensions; rotational moulding tolerances of about ±3% may apply.
Approx. overall height with flat lid: 1,120 mm (3,000 L) and 1,390 mm (5,000 L).
Access lid part 202803 (approx. 600 mm), short-duration walking load 150 kg.
Requires a flat, continuously supporting base; permanent shade for freestanding outdoor warranty.
Tank must not support deck structures, vehicles or other imposed loads.

Full specification

Product details

Key construction, installation and performance notes for Flat Underdeck Rainwater Tank.

Overview

The Flat Underdeck Rainwater Tank (4rain by GRAF) turns unused protected space beneath decks, raised homes and buildings into high-capacity rainwater storage. It is a rigid, self-supporting rotationally moulded tank for under-deck and under-house installs, permanently shaded outdoor sites, and approved underground use in pedestrian or landscaped areas.

Specification focus

More water in less floor space: about 765 L/m² (3,000 L) and 972 L/m² (5,000 L)

AU catalogue sizes: 3,000 L (Flat M) and 5,000 L (Flat L)

Scope of supply: tank plus Garantia access lid (part 202803)

Self-supporting on a flat, continuously supporting base (sand, crusher dust or concrete)

DN100 inlet and overflow seals in approved upper-body locations; lower connections for manifolded banks

Serviceable 600 mm access for inspection, cleaning and pump maintenance

Detail 01

Key features

More water in less floor space: about 765 L/m² (3,000 L) and 972 L/m² (5,000 L)
AU catalogue sizes: 3,000 L (Flat M) and 5,000 L (Flat L)
Scope of supply: tank plus Garantia access lid (part 202803)
Self-supporting on a flat, continuously supporting base (sand, crusher dust or concrete)
DN100 inlet and overflow seals in approved upper-body locations; lower connections for manifolded banks
Serviceable 600 mm access for inspection, cleaning and pump maintenance

Detail 02

Application

Garden irrigation, toilet and laundry cold-water reuse (with licensed plumbing), and rainwater retention. Not for potable drinking-water storage, vehicle loading, or unprotected direct sunlight. The tank must not support decking, buildings or other imposed loads.

Detail 03

Important

All dimensions are nominal. Rotational moulding tolerances of about ±3% may apply. Confirm access route, clearance and base before ordering. Permanent shade is required for freestanding outdoor warranty cover.

Technical documents