
Product Description

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
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:
- Empty it completely.
- Disconnect it from the downspout or close off the water inlet.
- 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
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:
- Empty it completely.
- Disconnect it from the downspout or close off the water inlet.
- 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
You place your order
Choose your size, color and options. Your greenhouse ships from the manufacturer's warehouse, packed for freight.
-
2
We call to schedule
We'll contact you to set up a delivery time frame that works for you.
-
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
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 usWhat is included?
Can I buy several?
Can it be buried?
What do I set it on?
Will mosquitoes or algae be a problem?
Can it stay outside all year?
How is it shipped?
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.
Greenhouse guides