2.4m x 4.4m The Ultimate Greenhouse 6mm Twin Wall
DTGH-AS220EXT-AKL
- Excellent Insulation: Polycarbonate panels provide superior heat retention compared to glass
- Optimal Ventilation: More vents than any other greenhouse on the market
- Stainless Steel Fasteners: Longer life and better durability
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Dimensions
Dimensions
Materials
Materials
Structure
Structure
Warranty
Warranty
Assembly
Assembly
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Ultimate 6mm Twin Wall Aluminium Greenhouse | 2.44 × 4.41m
Create a practical and protected growing environment with this Ultimate 6mm Twin Wall Aluminium Greenhouse. Designed with premium raw polycarbonate panels and a heavy-duty first-grade aluminium frame, it combines durability, insulation, and excellent light transmission for everyday gardening.
The greenhouse features 6mm twin wall polycarbonate panels made from high-quality raw materials, helping provide a reliable growing environment while allowing natural light to reach your plants. The 1.5mm powder-coated aluminium frame offers a durable, low-maintenance structure and is designed for easy assembly.
Ideal For
Perfect for growing and protecting:
- Vegetables
- Herbs
- Flowers
- Seedlings
- Other garden plants
The spacious design also provides convenient room for larger plants, pots, and gardening equipment.
Why Choose This Greenhouse?
Designed with practical features for comfortable everyday gardening, this greenhouse offers:
- Premium raw 6mm twin wall polycarbonate panels
- Heavy-duty 1.5mm powder-coated first-grade aluminium frame
- Excellent light transmission
- Low-maintenance aluminium construction
- Slotted channel panel fixture
- Double sliding doors with a 920mm opening
- Roof vents for ventilation
- Easy-to-assemble design
- 5-year guarantee on the aluminium frame
- 3-year guarantee on the 6mm polycarbonate panels
- Free foundation kit included
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
Product Code:
DTGH-AS220EXT-AKL
Colour:
Green
Overall Dimensions:
2440 (W) × 4410 (L) × 2270 (H) mm
Door Width:
920 mm
Frame Material:
1.5mm Powder-Coated First-Grade Aluminium
Panel Material:
6mm Twin Wall Polycarbonate
Door Type:
Double Sliding Door
Ventilation:
Roof Vents
Warranty:
5 Years on Frames / 3 Years on 6mm Polycarbonate Panels
Package Size:
- Carton 1: 146 × 19 × 73 cm
- Carton 2: 250 × 21 × 24 cm
- Carton 3: 146 × 19 × 73 cm
- Carton 4: 228 × 21 × 18 cm
Total Weight:
110 kg
Package Includes
- 1 × Greenhouse
- 1 × Foundation Kit
- 1 × User Manual
See How Our Greenhouse Is Built
An independent YouTuber shows exactly how our greenhouse is constructed — no edits, no shortcuts.
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 Greenhouse or Glasshouse?
Find the right growing space for your garden. Compare warmth, natural light, durability and appearance to choose the option that suits your needs.
| Features |
Polycarbonate Greenhouse
Lightweight, impact-resistant panels retain warmth and soften sunlight, helping vegetables, herbs and seedlings thrive.
|
Toughened-Glass Glasshouse
Enjoy natural light, clear views and timeless style with a toughened-glass growing space for your garden.
|
|---|---|---|
| Insulation & Heat Retention | Insulating air pockets help retain warmth and reduce heat loss during cooler weather. | Single-pane glass provides less insulation, allowing heat to escape more quickly. |
| Natural Light | Diffuses sunlight for softer, more evenly distributed light and fewer harsh shadows. | Clear glass allows more natural light through; frosted roof options soften incoming sunlight. |
| Growing Season | Better heat retention helps support growing into cooler months. | Excellent light transmission supports growing when daylight is limited; additional warmth may be needed. |
| Impact Resistance | Highly resistant to accidental knocks and impacts, with a low risk of shattering. | Stronger than ordinary glass, but can still break under severe impact. |
| Safety | Lightweight glazing that does not shatter like glass. | If broken, toughened glass breaks into small fragments, reducing injury risk compared with ordinary glass.* |
| Appearance & Visibility | Practical garden appearance with translucent panels that soften the view inside. | Clear views and a classic, premium finish that makes an attractive garden feature. |
| Heating Efficiency | Better insulation can reduce heating requirements when maintaining a set temperature. | Greater heat loss can increase heating requirements during colder months. |
| Installation & Handling | Lightweight panels are easier to lift and position during assembly. | Heavier panels require careful lifting, handling and installation. |
| Cleaning & Maintenance | Clean gently with a soft cloth and a suitable mild cleaner to avoid scratching. | Smooth, scratch-resistant glass is easy to clean and maintains its clarity well. |
| Long-Term Glazing Condition | Panels may scratch or weather over time; lifespan depends on quality and exposure. | Glass retains its clarity over time and does not yellow with sun exposure. |
| Summer Ventilation | Requires ventilation and, when necessary, shading to manage heat. | Requires ventilation and, when necessary, shading to manage heat. |
| Best For | Gardeners prioritising insulation, impact resistance and value. | Gardeners prioritising natural light, lasting clarity and garden aesthetics. |
| Product links | View Poly Greenhouse | View Glasshouse |
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.
