SKU: 82656392532

8x12 Polycarbonate Greenhouse with Twin-Wall Insulated Panels

Sale price$2373.75 Regular price$2637.50
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 13 - Sep 18

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For Your Every Summer RSVP, with Code: SUMMER15

Description

8x12 Polycarbonate Greenhouse with Twin-Wall Insulated PanelsLarge 8x12 Greenhouse with Thermal Efficiency and Superior Airflow 6mm Twin Wall Polycarbonate for Year Round Temperature Control This 8x12ft greenhouse is fitted with 6mm premium twin wall polycarbonate panels. The insulated glazing diffuses harsh light, retains warmth during colder months, and reduces heat gain in summer all while protecting plants from UV damage on both sides. Extra Ventilation and Durable Frame for Harsh Conditions With four roof

Large 8x12 Greenhouse with Thermal Efficiency and Superior Airflow

6mm Twin-Wall Polycarbonate for Year-Round Temperature Control

This 8x12ft greenhouse is fitted with 6mm premium twin-wall polycarbonate panels. The insulated glazing diffuses harsh light, retains warmth during colder months, and reduces heat gain in summer — all while protecting plants from UV damage on both sides.

Extra Ventilation and Durable Frame for Harsh Conditions

With four roof vents included, this model provides excellent natural airflow to prevent overheating and regulate humidity. The rust-resistant aluminium frame is powder-coated in matte black for long-lasting strength and sleek aesthetics.

Designed in New Zealand. Assembled in Australia.

Manufactured in New Zealand and assembled locally, this glasshouse is purpose-built for Australian conditions. Unlike many imported kits designed for milder climates, Winter Gardenz structures are engineered to handle the extreme weather seen in regional and coastal Australia — from strong winds to temperature swings.

Spacious Interior for Dedicated Growers

At 2596mm wide x 3844mm long, this 8x12 model offers plenty of space for raised beds, multiple staging levels, and propagation setups. It’s a great choice for home growers who want serious output with the control and protection of an insulated structure.

  • Dimensions: 2596mm (W) x 3844mm (L) x 2615mm (H to ridge)
  • Height to gutter: 1620mm
  • Glazing: 6mm twin-wall polycarbonate (UV-protected both sides)
  • Frame: Matt-black powder-coated aluminium
  • Roof vents: 4 included for improved 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 8x12ft Poly Greenhouse

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

✅ 2x Automatic Vent Openers

2x Greenhouse Louvre Vent Kits

1x 12ft 3-Tier Adjustable Greenhouse Shelving

1x 8×12 Shade Cover Kits

1x Aluminium Mesh Screen Door

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: 82656392532

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4.5 ★★★★★
Based on 16 reviews
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Verified Purchase
Javian Campbell
Bozeman, US
★★★★★ 5
Good quality
These fit so well material is very tick nice for winter they have all different colors and it’s so comfy it’s really good value for your money for that level of thickness
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 30, 2025
R
Verified Purchase
Ruby
Houston, US
★★★★★ 5
Buy it
If you're looking for a comfortable thick and nice turtle neck this is the one. It's nice and form fitting nice weight to it to keep you warm. But not to thick that you cant just wear it on a regular sunny day if you wanted. The design pattern Is also very nice. Can dress it up or down. I bought the black and then immediately bought the rust orange color for my friend once he tried on mine he wanted one immediately so I gifted him one. He loves it. Definitely worth the buy. Excellent quality. I bought a Large 5"11 165lbs
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Reviewed in the United States on December 21, 2024
M
Verified Purchase
Make it Do!
Lexington, US
★★★★★ 5
What you see is what you get!
Color: 01-black, Size: Large
Fits great, fabric is amazing, turtle neck fits tight, and the quality is amazing!
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Reviewed in the United States on February 11, 2026
S
Verified Purchase
SeanCeltiad
Grantham, US
★★★★★ 4
A true turtleneck that retains a snug high neck.
Color: White, Size: X-Large
I've found this brand to have gotten better over the years as far as offering the American market what it needs in terms of realistic sizing. I only wish they'd realize that there are a lot of us who are long in the back and arms where my only choice is to go a size up and sacrifice a slim fit for sleeves that are long enough plus a back that doesn't go up past my waist just because I reach up for something, that and I like to be warm. So these are such nice quality turtlenecks that it's hard to complain about but maybe the company will read this. The snug neck stays up is plus number one since that's why I'm buying a full neck. They come with very nice weaves in the fabric, good enough for casual or formal wear. Finally the warmth you seek is there but I've worn them in what most would think isn't the right temp for a turtleneck. Also they have them in white! Yes, a lot of others just don't for reasons I can't fathom, and the pic you're seeing is accurate, these will form to your shape without being ridiculously thin material. Several washes later and they are as fine a garment as when I first wore them. I've only found one other brand that compares to these but it's much more expensive, COOFANDY is affordable in these times of expensive everything. Warm but also a lightweight shirt, I've gotten them really dirty with actual dirt and it washes out so well you'd never know it. Don't let my taking off one star stop you, try one yourself and you'll be coming back for more.
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Reviewed in the United States on July 30, 2025
L
Verified Purchase
Larry
Fort Morgan, US
★★★★★ 5
Quality,warmth and fit
Color: Royal Blue, Size: Small
Really top quality. This is my 4th purchase of these Really great sweaters.
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Reviewed in the United States on February 12, 2026

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