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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Product code: DTGH-AS220EXT-AKL
Top of the line greenhouse:
- RAW 6mm Polycarbonate Panels
Only the purest raw materials are used to manufacture our polycarbonate panels. Most of cheap greenhouses use recycled material, the strength and light transmittance are sacrificed when achieving cost effective.
We offer a full 3 year warranty on our poly panels for this range. We are 100% confident in the quality of our greenhouses.
- Heavy Duty Semi-Commercial Frame- Easy to assemble, our greenhouse frames are made from heavy duty 1.5mm non-rusting powder coated green finish.
The frames on Ultimate greenhouses are produced of the highest quality FIRST GRADE aluminium. This quality aluminium is strong enough to bear 180kg of snow, withstand very strong winds and needs minimal maintenance.
- Slotted Channel Panel Fixture, better wind resistance.
- Double sliding door with an opening of 92cm. Easy allocation of large plants and objects.
- Roof vents provide more than adequate ventilation.
- For detailed features, go to - Greenhouse Features
Where possible, we recommend installing the greenhouse in a sheltered location.
Colour: Green.
Greenhouse Dimension: 244cm W x 441cm L x 227cm H (Door Width:92cm)
Package size:
4 cartons
146x19x73cm
250x21x24cm
146x19x73cm
228x21x18cm
Weight: 110kg
3 years guarantee on 6mm polycarbonate boards, 5 years guarantee on frames.
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.
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
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.
