SKU: 55273858244

6x20 Polycarbonate Greenhouse with Twin-Wall Insulated Panels

Sale price$3561.75 Regular price$3957.50
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 24 - Jul 29

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For Your Every Summer RSVP, with Code: SUMMER15

Description

6x20 Polycarbonate Greenhouse with Twin-Wall Insulated PanelsLarge 6x20 Greenhouse with Premium Insulated Polycarbonate for All Season Growing 6mm Twin Wall Polycarbonate for Exceptional Thermal Control This 6x20ft greenhouse is clad in 6mm premium grade twin wall polycarbonate an ideal material for reducing heat loss in winter and excess heat gain in summer. Its insulating structure helps create a stable environment, especially beneficial for temperature sensitive crops. Sturdy, Rust Free Frame with a Bespoke

Large 6x20 Greenhouse with Premium Insulated Polycarbonate for All-Season Growing

6mm Twin-Wall Polycarbonate for Exceptional Thermal Control

This 6x20ft greenhouse is clad in 6mm premium-grade twin-wall polycarbonate — an ideal material for reducing heat loss in winter and excess heat gain in summer. Its insulating structure helps create a stable environment, especially beneficial for temperature-sensitive crops.

Sturdy, Rust-Free Frame with a Bespoke Architectural Finish

The modern matt-black aluminium frame is powder-coated to resist rust, corrosion, and UV exposure. Designed for strength over longer spans, it maintains a clean, architectural look with the durability needed for long-term outdoor use.

Manufactured in New Zealand. Warehoused and Supported in Australia.

Winter Gardenz greenhouses are made for Australasian conditions — designed in New Zealand and assembled here in Australia. You’ll get local support, fast delivery, and clear instructions — no international wait times or confusing manuals.

Expansive Space and Airflow for Committed Growers

At 1972mm wide x 6386mm long, this greenhouse offers extensive internal room for multi-zone setups, raised beds, or large-scale propagation. With 8 roof vents included, it delivers excellent airflow and improved climate control across the entire structure.

  • Dimensions: 1972mm (W) x 6386mm (L) x 2360mm (H to ridge)
  • Height to gutter: 1620mm
  • Glazing: 6mm twin-wall polycarbonate
  • Frame: Matt-black powder-coated aluminium
  • Roof vents: 8 included for ventilation
  • Wind Rating: Up to 150km/h when installed to specification

Download Installation Resources

To make installation easier, we’ve included both a detailed foundation plan and a general guide. These documents will help you set up your greenhouse safely and securely.

Download Foundation Plans Download General Foundation Guide

Recommended Accessories for the 6x20ft Greenhouse

Customize your greenhouse for maximum efficiency and comfort with these popular upgrades:

8x Automatic Vent Openers

4x Greenhouse Louvre Vent Kit

2x 10ft 3-Tier Adjustable Greenhouse Shelving

2x 6×10ft Shade Cover Kit

1x Aluminium Mesh Screen Door

1x Extended Top Door Rail for 6ft Greenhouse Models

Please note: Greenhouses can only be delivered to your nearest Mainfreight Depot.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 55273858244

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4.9 ★★★★★
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Product Reviews
J
Verified Purchase
J
Massapequa, US
★★★★★ 5
Very nice shelves
Color: Black, Size: 17" x 6"
Great shelves, easy to install and very sturdy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
A
Verified Purchase
A. Zimmerman
Massapequa, US
★★★★★ 5
Nice sleek shelves
Color: Black, Size: 17" x 6"
The shelves are perfect for displaying my childs dolls on the wall. Easy to install and display nicely. Sleek design and sturdy. Good quality. Nice to have to options on how you want to hang them as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2026
R
Verified Purchase
Redbird
Waukegan, US
★★★★★ 5
Nice product
Color: Brown, Size: 17" x 6"
The shelves were a dark brown and lightweight. The brackets were very nice and it will be great for decorative purposes. A great value!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
U
Verified Purchase
USN
Lowell, US
★★★★★ 5
Very Nice!
Color: Natural, Size: 17" x 6"
Nice product and serves its purpose well for my needs at bedside.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
R
Verified Purchase
Robert
Port Orchard, US
★★★★★ 4
Pleased.
Color: Black, Size: 17" x 6"
Pleased.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026

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