GREENHOUSE 6mm Twin Wall 2230 x 3660 x 2150mm
YH-AG0812-H215-AKL
- Excellent Insulation: Polycarbonate panels provide superior heat retention compared to glass
- Optimal Ventilation: Prevent overheating in summer, bringing in fresh air to keep plants healthy
- Stainless Steel Fasteners: Longer life and better durability
Couldn't load pickup availability
Dimensions
Dimensions
|
External Dimension (mm) |
2230 x 3660 |
|---|---|
|
Length/Depth (mm) |
3660 |
|
Width (mm) |
2230 |
|
Peak Height (mm) |
2150 |
|
Door Height(mm) |
1733 |
|
Door Opening (mm) |
670 |
|
Area |
8.16 |
Materials
Materials
|
Panel Thickness (mm) |
6 |
|---|
Structure
Structure
|
Number of Doors |
1 |
|---|---|
|
Number of Vent |
4 |
Warranty
Warranty
|
Frame Warranty |
5 Years |
|---|---|
|
Panel Warranty |
3 Years |
| - |
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2.23 × 3.66m Aluminium Greenhouse With 6mm Twin Wall
Create the ideal environment for healthy plants with our 6mm Twin Wall Aluminium Greenhouse. Designed for home gardeners who value durability and excellent insulation, this greenhouse features premium 6mm twin wall polycarbonate panels paired with a heavy-duty powder-coated aluminium frame for reliable year-round growing.
Manufactured using high-quality raw polycarbonate materials, the panels provide excellent light transmission and strength while helping to create a stable growing environment. The first-grade aluminium frame is corrosion-resistant, low maintenance, and designed for easy DIY assembly.
Ideal For
Perfect for growing:
- Vegetables
- Herbs
- Flowers
- Seedlings
- Potted plants
- Everyday home gardening
Whether you're starting seeds, extending the growing season, or creating a dedicated growing area, this greenhouse provides a practical and protected space for your plants.
Features
- Premium raw 6mm twin wall polycarbonate panels
- Heavy-duty 1.5mm powder-coated first-grade aluminium frame
- Excellent light transmission and thermal insulation
- Low-maintenance aluminium construction
- Slotted channel panel fixing system
- Four opening roof vents for natural ventilation
- Zinc-plated steel foundation frame with ground pegs included
- Easy DIY assembly
- 5-year frame warranty
- 3-year polycarbonate panel warranty
Why Choose This Greenhouse?
Built with premium materials and practical features, this greenhouse is designed to provide a reliable growing environment throughout the seasons.
The high-quality twin wall polycarbonate panels help retain warmth while allowing plenty of natural light to enter, and the heavy-duty aluminium frame offers long-lasting durability with minimal maintenance. Four roof vents promote natural airflow to help regulate temperature and humidity for healthier plant growth.
Installation Notice
Proper anchoring is essential for safe installation.
Where possible, install the greenhouse in a sheltered location.
Greenhouses should not be installed in exposed locations that experience frequent strong winds.
Severe weather, storms, and extreme wind conditions may damage the greenhouse regardless of installation quality.
Specifications
Colour:
Dark Grey
Overall Dimensions:
2230 (W) × 3660 (L) × 2150 (H) mm
Door Width:
670 mm
Wall Height:
1370 mm
Frame Material:
1.5mm Powder-Coated First-Grade Aluminium
Panel Material:
6mm Twin Wall Polycarbonate
Foundation Frame:
Zinc-Plated Steel
Ventilation:
4 × Opening Roof Vents
Warranty:
- Frame: 5 Years
- Polycarbonate Panels: 3 Years
Carton Size:
- Carton 1: 230 × 39 × 11 cm
- Carton 2: 142 × 31 × 12 cm
- Carton 3: 136 × 75 × 21 cm
Package Includes
- 1 × Greenhouse
- 1 × Foundation Kit
- 1 × User Manual

We aim to deliver all products as soon as possible. Below is an outline of the services we offer on Steelmates products.
Standard Delivery
Steelmates will email you shortly after your order is processed to confirm your order has been placed successfully. We will then call you or send you an Email with a tracking number when your order is dispatched. The delivery is weekday service.
| Auckland | |
| Courier | 2-3 working days |
| Rural Courier | 5-7 working days |
| Transport | 3-5 working days |
| North Island | |
| Courier | 2-5 working days |
| Rural Courier | 5-8 working days |
| Transport | 4-7 working days |
| MainFreight Depot Pickup |
2-4 working days |
| South Island | |
| Courier | 2-5 working days |
| Rural Courier | 5-8 working days |
| Transport | 4-7 working days |
| MainFreight Depot Pickup | 2-4 working days |
Kindly be advised that the delivery time for the South Island is subject to variation based on the availability of stock at either our Christchurch warehouse or Auckland warehouse. In the case of large items requiring transportation, we kindly request that you allocate an additional 2-3 working days for delivery if the parcel originates from the North Island.
Delivery FAQ
Do I need to be home for my Delivery?
Yes, all of our products require a signature as proof of delivery. If you are not happy with your delivery date then please contact before the day to make alternative arrangements.
My house has a restricted access, what do I do?
Our drivers are only contracted to provide kerbside drop offs and deliveries. They will NOT bring any of our orders through your home. A driver may offer to take an order further; for instance a back garden but this is ONLY at their own discretion. If you have any questions about access or you live in a restricted access zone please contact us prior to ordering.
My Order Has Not Been Delivered, What Should I Do?
If your order has not been delivered when expected please feel free to contact us on 09-2740618.
Please Note: Additional items such as the riverter, security locks and shelving may be delivered separately on a different day to your main product. If you have ordered multiple products in one order then you may receive multiple deliveries.
$1,639.00
Grow with More Confidence in Changing Weather
A quality greenhouse helps protect your plants from shifting weather conditions while creating a more stable environment for everyday growing. It is a smarter way to extend the season, improve consistency, and support healthier plant growth year round.
See How Our Greenhouse Is Built
An independent YouTuber shows exactly how our greenhouse is constructed — no edits, no shortcuts.
Versatile Growing Space
Sleek aluminium finish blends well with contemporary gardens and backyards.
Ideal for vegetables, herbs, seedlings, and flowers in all seasons.
Take Home Growing to the Next Level
A greenhouse gives passionate gardeners a more capable space for propagation, crop care, and ongoing seasonal growing. It is a practical upgrade for anyone ready to move beyond open-air gardening and grow with more purpose.
6mm Twin Wall
A twin wall is a common configuration in greenhouses, but the thickness of the panel varies. Our polycarbonate panels are 6mm thick, which sounds like a small difference than 4mm, but it creates 20% effectiveness in heat protection, 5-10% less light transmission. It will also last longer, especially in the variable climate of New Zealand.
Improved Wind Resistance With Door Lock
The greenhouse is able to withstand strong wind from the outside, however, if wind gets inside through the door, the greenhouse becomes vulnerable and some panels may be lifted off. For this new series of greenhouses,, we have added a door lock to keep the door securely closed.
Extensive Reinforced Bracing
Every panel has extra diagonal bracing behind their back, protecting them in severe weather conditions. There are also horizontal bracings added under the peak, which stabilize the structure of the whole greenhouse.
Stainless Steel Fasteners
Upgraded stainless steel bolts and nuts, they are rust proof as the aluminium profiles. It will support the greenhouse for many years to enjoy with peace of mind.
Optimal Ventilation
A well-ventilated greenhouse maintains stable temperatures and healthy humidity levels, helping prevent overheating, condensation, and disease.
These easy-to-open vents can be operated with one hand, or you can get an automatica vent opener.
Polycarbonate vs Glass Greenhouse
Poly Greenhouse
✔ Excellent Insulation: Polycarbonate panels provide superior heat retention compared to glass, helping maintain stable temperatures and extend your growing season.
✔ Impact-Resistant & Virtually Unbreakable: Designed to withstand hail, strong winds, and accidental knocks.
✔Diffused Light for Healthier Plants: The twin-wall structure gently diffuses sunlight, reducing harsh shadows and preventing plant burn.
✔ Energy Efficient & Cost Effective :Better insulation means reduced heat loss, helping you save on heating costs during colder months.
✔ Easy Installation: Lightweight panels are easier to handle and install, simplifying assembly and reducing setup time.
Glasshouse
✔ Maximum Light Transmission: Tempered glass allows more natural sunlight to reach your plants, promoting stronger growth, healthier leaves, and better yields throughout the seasons.
✔ Safer by Design: If broken, tempered glass shatters into small, blunt pieces, making it a safe choice for families
✔ All-Weather Reliability: Built to handle temperature changes, strong winds, and harsh outdoor conditions, tempered glass keeps your greenhouse dependable.
✔ Premium Look & Feel: Tempered glass gives your greenhouse a professional, high-end appearance that blends beautifully into any garden setting.
✔ Easy to Clean & Maintain: Smooth, non-porous surfaces resist staining and can be cleaned quickly
Everything for Planting & Garden Care
From seedling tools and irrigation products to pruning, composting, and plant protection, explore useful garden supplies for every stage of growing.
We Give Back
We support New Zealand conservation by donating to non-profits, and through “Greenhouse Grows, Tree Follows,” we plant one native tree for every greenhouse sold, helping restore habitats and support a healthier climate.
Geenhouses Buying Guide
Essential reading for anyone planning to buy a greenhouse
Greenhouse Gardening Guide
Get tips, tutorials, and resources to start gardening with ease.
- 5 stars: 77 (96%)
- 4 stars: 2 (3%)
- 3 stars: 1 (1%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
We bought a small Greenhouse from Steelmates and we could not be happier. It is extremely well designed from the aluminium frame right down to the stainless steel fixings. Would definitely recommend
You can see in the picture, regarding the color, structure, and quality, nice quality for the size and price. During the process of assembling, I turned my neighbours to ask for some help. They are so nice and helped me finish it. Thanks to my kind neighbours. Without their help, I might not have had such beautiful greenhouse. Excellent product! Nice neighbours!
Looks good. Due to the weather I have been unable to erect. Quick service from Steelmates and Daily Freight.
found this company good to deal with. fast delivery. Gooid product A+++++
Good trade.Thanks.
Great trade so easy, thanks
Great trade - excellent customer service
Good prompt trade, happy with product.
nice product looking forward to seeing produse
Great service & product thanks
Very happy
Good to trade with, helped me with sorting delivery. Id be happy to deal with them again.
Awesome service. Haven't put the greenhouse up yet.
Great trader, really quick and easy purchase. Thanks heaps
Great product, really pleased with the finished result. Easy company to deal with.
Very good fast service and shipping
Great trade, quick delivery...thanks!
Thanks for the quick delivery and easy trade! Recommend A+++
So pleased with the greenhouse I bought, so beautiful and so delicated. Well worth the price. Instructions are also easy to follow. I finished it within a full day. You can see in the picture what the greenhouse looks alike. Isn't perfect? For me, it is too much practical, where I can plant. A little pity is that I bought a small one. After thinking for a while, I decided to buy the second that should be bigger.
Super duper deal.... Awesome guys to deal with...
Impressed, very impressed. From one engineer to another, well done!
Well designed, accurate, and strong.
I��m in a high wind area and it is as solid as a rock,
Changed a few nuts to self locking where needed and all good.
excellent trade thanks
I previously bought a cheaper greenhouse but the quality of it was extremely worse. Not long ago, I had dinner in a restaurant and saw it used this for outdoor seating during the winter so I determinded to buy a better greenhouse. My expectation is that it was insulated, ventilated, and warm. The greenhouse meets all my expectation and is a desirable one. The design is high quality. Price is worthwhile.
Great trade. We received our product in a reasonable time despite their lockdown. Highly recommend this trader to others. Thanks
Fast delivery.. Good product..
Fast delivery.. Good product..
good greenhouse manual needs more instruction's as the pictures are difficult to understand
Many thanks for the quick, smooth delivery. as we have not put it up yet, I am hoping the feedback will still be excellent when we do.
Easy trade. Highly recommend.
Excellent service. Would I deal with them again? You betcha.
Fantastic trade! Arrived very quickly. Nice looking Green house. Have only assembled the windows and doors so far but appears to be good value for money. Instructions could be clearer but we are working it out. Highly recommend directrade and would definitely buy again!
Very easy trade. Very pleasant and helpful staff at the store. No problems at all. Recommended trader.
Thanks to the advice of seller, I could buy a desired greenhouse. So considerate a company is! Patient to provide me suggestions on which type to buy and reactions are vary fast. So was the delivery. Now, it was completed behined my house. Very sturdy and well constructed, however not easy to install. But my plants stay warm now. Thanks.
outstanding service, thanks again!
