SKU: 55273858244

6x20 Polycarbonate Greenhouse with Twin-Wall Insulated Panels

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

Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

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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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4.0 ★★★★★
Based on 28 reviews
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Verified Purchase
THAILEI L SMITH
Alexandria, US
★★★★★ 5
Not recommended for strong chewers.
Color: Green Cactus
There was nothing wrong with this. But my dog is an absolute destroyer. She makes it her personal mission to annihilate any toy I buy. This did not last 30 minutes. Very cute and good for normal dogs that like to actually have toys to play with. Do not recommend for strong jaw destroyers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
D
Verified Purchase
DianaZ
Omaha, US
★★★★★ 5
Fun and indestructible!
Color: Green Cactus
The dogs love this toy. And so far it’s been indestructible with constant playing and chewing
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
L
Verified Purchase
Lauren
Bozeman, US
★★★★★ 4
Durable for light to medium chewers - not heavy
Color: Green Cactus
obviously cute. not super durable - lasted a good minute but disintegrates fairly quickly and eventually nothing was left - having to high monitor with a big chewer. (10 mo Great Dane)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
A
Verified Purchase
Amazon Customer
Alexandria, US
★★★★★ 5
Unbelievable toy for aggressive chewers
Color: Green Cactus
Great toy for aggressive chewers! I'm not one to hand out 5 star reviews but this one I 100% believe in. I bought the first one in 2023 and just replaced it because it broke. Now this is not a played with every once in a while, this was played with daily as it is his favorite toy. Very few toys last long but this one has went beyond my expectations. Could not be happier.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
K
Verified Purchase
Kayla
Pawtucket, US
★★★★★ 3
Not Recommended!
Color: Green Cactus
Be aware that with major chewers it is not durable. My dog tour right through it and was eating pieces off of it. Thankfully we got the pieces back out of his mouth but definitely not for tough chewers. Also only lasted 2 days in decent condition and was only used on the occasion throughout the day.
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Reviewed in the United States on April 22, 2026

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