Winter Gardenz
8x20 Elite Stonewall Greenhouse
8x20 Elite Stonewall Greenhouse
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Product Description
Product Description
Expansive 8 x 20ft/2.6 × 6.38 m (16.6 m²) matte black powder-coated aluminium greenhouse with full 4mm toughened safety glass cladding throughout, designed to sit on a brick base.
Includes:
- Hinged, lockable double doors for secure entry
- Full-length 2.44 m heavy-duty 3-tier adjustable staging along one side
- External shade cloth for superior heat and UV protection
- 8x Automatic roof vents
- Integrated guttering with downpipes
- 25-year structural warranty
- Additional set of doors can be added to the back wall of the greenhouse
Requires a level brick or concrete base (not supplied). Ideal for commercial herb production, serious home growing, or a stylish garden retreat.
Greenhouse Specification
Greenhouse Specification
- Width: 2596mm (8ft approx)
- Length: 6386mm (20ft approx)
- Height (to gutter): 1892mm
- Height (to ridge): 2915mm
Foundation & Setup Guides
Foundation & Setup Guides
Delivery & Shipping Details
Delivery & Shipping Details
Glasshouses can only be delivered to your nearest Mainfreight Depot. For more information, see our shipping information.
*Please Note* Because our greenhouses are packed to order, we work on first-come-first-serve basis and generally have about a 2-week lead time.

Unique Features
HINGED, LOCKABLE DOORS
Elite-style greenhouses feature hinged, lockable doors with a zero-entry design for easy, secure access – perfect for wheelbarrows and peace of mind.
RUBBER BEADING
Our unique rubber beading system securely holds glazing panels in place while significantly strengthening the overall structure.
RAINWATER GUTTER SYSTEM
Integrated gutter system designed to efficiently collect and channel rainwater – ideal for Aussie conditions and water-wise gardening.
The Highest Quality In Australia
DURABLE
Built to last with a premium black powder-coated finish using genuine Dulux® powder coat. Looks sharp, stays beautiful with virtually no maintenance, and is backed by the Dulux non-fade warranty.
HEAVY-DUTY ALUMINIUM FRAME
Robust, extruded aluminium framing delivers years of reliable performance with minimal upkeep – engineered for tough Australian conditions.
SUPERIOR DESIGN & CONSTRUCTION
The unique Winter Gardenz engineering sets the benchmark for strength and longevity – quite simply, nothing else on the Australian market comes close.
Foundation Tips
A solid foundation is key to a stable greenhouse. Download our Greenhouse Foundation Guide for detailed tips, measurements, and best practices. When assembling, note that our aluminium parts are labeled by profile and length. For example, L630-2596 means the profile is L630 and it's 2596mm long.
Instructional Videos
Check out our YouTube Channel for installation, building tips and more.
Frequently Asked Questions
How Do I Place an Order?
You can purchase through one of our retailers, or directly through our website. Buying through our retailers offers free shipping and expert support.
If you need help, call us at 1800 757 610 or email sales@wintergardenz.com.au.
Are Your Greenhouses Made in Australia?
Yes! Our greenhouses are made in our factory in Somerville, VIC and are Certified Australian Made. Designed for local conditions, they offer durability, support, and peace of mind.
Kitset Greenhouse Delivery
Greenhouses are shipped to the nearest Mainfreight depot due to weight. You’ll need a trailer to collect them, and the depot will forklift the crate onto it.
Check our Greenhouse Weights and Dimensions page to see how your greenhouse will be packed for collection.
What Tools Do I Need for Assembly?
- Cordless impact driver (with supplied 10mm nut setter/socket)
- Phillips head screwdriver
- Set square, spirit level, tape measure
- Scissors or sharp knife
- Bucket of warm soapy water (helps with rubber beading)
Where Can I Find Base Dimensions?
Go to the product page of your greenhouse size (e.g., 10x16ft glasshouse) and click 'Download Foundation Page'.
How Difficult Is Assembly?
Watch our installation videos to decide. Most greenhouses can be built with patience and time, but if you'd rather have it assembled professionally, ask us for a quote.
For reference, a 8x8ft greenhouse takes two people about a day to build.
Why Choose Winter Gardenz?
Unlike many competitors, we display our greenhouses in retail outlets. Cheaper alternatives may lack:
- Sturdy framing guaranteed not to rust
- 4mm toughened safety glass
- Australian manufacturing and customer support
Download Our Customer Brochure
Get detailed product information in our Winter Gardenz brochure.
Everything You Need to Get Growing with Confidence
Discover expert tips, nearby stockists, and real customer stories to get the most from your Winter Gardenz glasshouse. Whether you're picking the perfect size, caring for your plants year-round, or connecting with trusted local dealers, our guides are here to support every step of your growing journey.
Support Hub
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Position Your Greenhouse
Position your greenhouseLearn where and how to place your greenhouse for optimal light and airflow.
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Information & Videos
Assembly VideosWatch videos on the installation process for various greenhouse models.
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Weights & Sizes
Shipping InformationCompare kitset dimensions, structure weights, and model specifications.
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Find a Stockist Near You
StockistFind a local stockist for expert guidance and a smooth, hassle-free purchase of your Winter Gardenz greenhouse.