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Exaco

Graf Top Tank 345 Gallon Rain Water Tank

Graf Top Tank 345 Gallon Rain Water Tank

4.9/5 · 147 verified reviews
Regular price $594.00 USD
Regular price $699.99 USD Sale price $594.00 USD
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★★★★★
“Greenhouse quality is superb and the customer service is outstanding. Thank you to Mulberry Greenhouses!”
Tea C. · Verified buyer Read all 147 reviews →
  • 100% free shipping
  • Authorized retailer
  • No sales tax (except georgia)
  • Price match guarantee
Questions before you buy? Talk to a greenhouse specialist: 678-408-8222 or [email protected]
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Product Description

divider-leaf-green

Serious storage, simple setup: 345 gallons of rainwater in one tank, enough to keep a big vegetable garden, a greenhouse or a small orchard going through a dry summer.

The Graf Top Tank is a commercial-grade rain tank for above-ground use. It's made from industrial-strength PE plastic, yet weighs only 66 lbs empty, so one or two people can move it into place. It comes with a brass tap and a downspout connection kit, so you can start collecting the day it arrives.

💧 Did you know? Just 1 inch of rain on a 1,000 sq ft roof yields about 600 gallons, nearly enough to fill two Top Tanks from a single storm.

Why Gardeners Fall for It

💪 345 gallons in one tank

That's roughly 170 trips with a 2-gallon watering can.

🔗 Downspout kit included

Everything you need to fill it from your gutter comes in the box.

🚰 Solid brass tap

A durable brass tap for filling cans or connecting a hose.

🏋️ Light when empty

Only 66 lbs, so it's easy to position before you fill it.

🌑 Algae stays out

The dark green, opaque walls block sunlight to keep water cleaner.

🌲 Blends into the garden

The dark green color sits quietly next to hedges, sheds and greenhouses.

Why Your Plants Will Thank You

Rainwater is naturally soft and chlorine-free, the way plants like it. Vegetables, greenhouse seedlings, flower beds and potted plants all do better on it than on treated tap water. Every gallon you catch is one less on your water bill, and your garden keeps drinking even during summer watering restrictions.

Complete Your Setup

🚿 Graf Water Removal Kit

Makes draining quick and easy for cleaning or before a hard freeze.

Curious how much water your roof could collect? Plug in your numbers with our Greenhouse Rainwater Calculator.

❄️ Winter Care in 3 Easy Steps

Water expands when it freezes and can crack any rain barrel. Before the first hard freeze:

  1. Empty it completely.
  2. Disconnect it from the downspout or close off the water inlet.
  3. Leave the spigot open so any leftover water drains out.

🌿 Why buy from Mulberry Greenhouses? We're a small, woman-owned, family-run business based in Atlanta, GA, and an authorized Exaco dealer. We answer every question personally, ship free to the continental US, and offer a Price Match Guarantee (please check the rules). Questions? Call 678-408-8222 or email [email protected].

Prices and availability can change without notice, and manufacturer discounts may apply.

  • 345 gallons Capacity
  • 46.5" diameter x 61.5" H Dimensions
  • Industrial-strength PE plastic Material
  • 66 lbs (empty) Weight
  • 40" x 48" x 48" Box size

Overview

Serious storage, simple setup: 345 gallons of rainwater in one tank, enough to keep a big vegetable garden, a greenhouse or a small orchard going through a dry summer.

The Graf Top Tank is a commercial-grade rain tank for above-ground use. It's made from industrial-strength PE plastic, yet weighs only 66 lbs empty, so one or two people can move it into place. It comes with a brass tap and a downspout connection kit, so you can start collecting the day it arrives.

💧 Did you know? Just 1 inch of rain on a 1,000 sq ft roof yields about 600 gallons, nearly enough to fill two Top Tanks from a single storm.

Why Gardeners Fall for It

💪 345 gallons in one tank

That's roughly 170 trips with a 2-gallon watering can.

🔗 Downspout kit included

Everything you need to fill it from your gutter comes in the box.

🚰 Solid brass tap

A durable brass tap for filling cans or connecting a hose.

🏋️ Light when empty

Only 66 lbs, so it's easy to position before you fill it.

🌑 Algae stays out

The dark green, opaque walls block sunlight to keep water cleaner.

🌲 Blends into the garden

The dark green color sits quietly next to hedges, sheds and greenhouses.

Why Your Plants Will Thank You

Rainwater is naturally soft and chlorine-free, the way plants like it. Vegetables, greenhouse seedlings, flower beds and potted plants all do better on it than on treated tap water. Every gallon you catch is one less on your water bill, and your garden keeps drinking even during summer watering restrictions.

Complete Your Setup

🚿 Graf Water Removal Kit

Makes draining quick and easy for cleaning or before a hard freeze.

Curious how much water your roof could collect? Plug in your numbers with our Greenhouse Rainwater Calculator.

❄️ Winter Care in 3 Easy Steps

Water expands when it freezes and can crack any rain barrel. Before the first hard freeze:

  1. Empty it completely.
  2. Disconnect it from the downspout or close off the water inlet.
  3. Leave the spigot open so any leftover water drains out.

🌿 Why buy from Mulberry Greenhouses? We're a small, woman-owned, family-run business based in Atlanta, GA, and an authorized Exaco dealer. We answer every question personally, ship free to the continental US, and offer a Price Match Guarantee (please check the rules). Questions? Call 678-408-8222 or email [email protected].

Prices and availability can change without notice, and manufacturer discounts may apply.

The details

Specifications

Size

Capacity 345 gallons
Dimensions 46.5" diameter x 61.5" H
Color Dark green

Build

Material Industrial-strength PE plastic
Weight 66 lbs (empty)
Included Brass tap and downspout connection kit
Use Above ground
Brand / Made in Graf, Germany (distributed in the US by Exaco)
Item # 323001

Shipping and packaging

Ship method LTL truck freight (too large for UPS/FedEx)
Boxes 1 carton
Box size 40" x 48" x 48"
Shipping weight 70 lbs

Free curbside freight delivery

How delivery works

  1. 1

    You place your order

    Choose your size, color and options. Your greenhouse ships from the manufacturer's warehouse, packed for freight.

  2. 2

    We call to schedule

    We'll contact you to set up a delivery time frame that works for you.

  3. 3

    Free curbside freight

    Delivery is by LTL motor freight on an 18-wheeler. Let us know about tight roads or low wires so we can plan ahead.

  4. 4

    Receive and unload

    Someone needs to be there to receive the delivery. The driver does most of the work but may need a hand.

Weight and packaging

How this greenhouse arrives, so you can plan for unloading and storage.

  • Ship methodLTL truck freight (too large for UPS/FedEx)
  • Boxes1 carton
  • Box size40" x 48" x 48"
  • Shipping weight70 lbs

Good to know

Frequently asked questions

Can't find your answer? Our greenhouse specialists are happy to help you choose.

678-408-8222 Email us
What is included?
A brass tap and a downspout connection kit come with the Top Tank.
Can I buy several?
Yes. Up to 8 Top Tanks nest together on one pallet (2,760 gallons in total). Call us for multi-tank pricing.
Can it be buried?
No. The Top Tank is made for above-ground use.
What do I set it on?
A firm, level base such as compacted gravel, pavers or a concrete pad. A full tank weighs over 2,800 lbs.
Will mosquitoes or algae be a problem?
Graf designed it as a closed system, so mosquitoes can't get in to lay eggs. The opaque walls block sunlight, which keeps algae growth to a minimum.
Can it stay outside all year?
Yes, as long as it sits on a firm, level surface and you prepare it for winter: empty it, disconnect it from the downspout, and leave the tap open before the first hard freeze. The UV-stable plastic resists fading in the sun.
How is it shipped?
It ships free by LTL truck freight to the continental US, because it is too large for UPS or FedEx. The freight company calls ahead to set up delivery.
Is shipping really free?

Yes. Shipping is free. Locations with limited access, such as islands, are rare exceptions that may carry an extra fee, and we'll tell you before anything ships.

Do you offer a price match?

Yes. If you find the same greenhouse for less from an authorized dealer, call or email us with the offer and we'll review it.

Are you an authorized retailer?

Yes. Mulberry Greenhouses is an authorized retailer, so your greenhouse is covered by the full manufacturer warranty.