Sigma Ventilation Window

Size: 3′ × 1.4′

The Sigma ventilation window is a perfect complement to your Sigma Greenhouse. Provides ample ventilation and improves air circulation inside your Sigma Greenhouse. It is easy to install.

Galvanized Steel Structure
Rust-Resistant
3′ × 1.4′

Shipping calculated at checkout.

Sale price: $55 USD
Regular price: Regular: $55 USD

Have questions? Call us 1-877-669-1286

Description
Reviews
Shipping

The Sigma ventilation window is a perfect complement to your Sigma Greenhouse. Provides extra ventilation and improves air circulation in your Sigma Greenhouse. It is easy to install.

For maximum efficiency, we recommend that you install a ventilation window on each side of the greenhouse. Only fits Sigma greenhouse models.

Customer Stories

It can be -28c out and it's a sunny +12c inside

This is our first real greenhouse. We set up our greenhouse in Kapuskasing Ontario, hardiness zone 2! We have the...

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This is our first real greenhouse. We set up our greenhouse in Kapuskasing Ontario, hardiness zone 2!

We have the Sigma 12x20. Our first season, we grew four tomatoe varieties, four pepper varieties, tomatillos, ground cherries, stevia and basil. We went from a 75 day growing season to a 100 day growing season and this year we plan to heat it. Our buying experience was excellent and the shipping was fast considering how far up north we are.

Aside from growing food in it, my favorite thing about the greenhouse is that it's a winter reprieve. It can be -28 out and it's a sunny +12 inside.

To a person considering buying one, I would say.. DO IT! The only negative thing I can say is for first timers, the directions could have been more detailed. I wish I could build it over again.. but that's hindsight.

Cheers, Tammy Nephin
Maryann Sroka from central Alberta

We bought a 10 x 26 Sigma greenhouse we live in central Alberta. The shipping was so easy and fast. We decided to buy...

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We bought a 10 x 26 Sigma greenhouse we live in central Alberta. The shipping was so easy and fast. We decided to buy a greenhouse because of bunnies and deer that love my garden. We built the greenhouse on a gravel pad. The initial set up was not easy, but after the first part the extensions went much better.

We also bought the automatic windows which I absolutely love. We installed 2 and will install the other 2 in the spring as it got late in the season when we finished the greenhouse. I built 4 -8’ x 30” raised boxes for in the greenhouse.

I planted dill and romaine in early sept. And it is still growing even though our night temperatures are -12. I’m so excited for spring to plant everything in the greenhouse. I would highly recommend this greenhouse to anyone considering setting up a greenhouse. Nick was always available to answer my questions.

Thank you Planta Greenhouse.
Greenhouse review from Tara

Amazing greenhouses! Durable and Sturdy, and very minimal cussing to set up! 😁😜 Deff reccomend two people for setup ...

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Amazing greenhouses! Durable and Sturdy, and very minimal cussing to set up! 😁😜 Deff reccomend two people for setup but otherwise very straight forward! Also Planta Greenhouses were an amazing company to deal with. We had an oops with our order on some parts missing... one quick email and message and some pictures, and parts were en-route ASAP no questions asked. Highly reccomend to anyone wishing to purchase an amazing addition to their garden! ❤

Greenhouses are amazing products, and they require special shipping and handling. That is the reason, we have been working diligently over the past year to secure preferential shipping rates for our customers. Most shipments across Canada and the US are between $250 and $450. You can always give us a call to receive an exact quote.

We will contact you to confirm shipping price, based on your location and order size.
Shipping on most orders is between $250 and $450, customers in remote areas may need to pay extra.
When you place your order, please make sure to enter the correct Phone and Address at checkout. You will be contacted by phone before the item is shipped. We cannot be responsible for deliveries to incorrect addresses.
As part of the delivery process, we require a contactable telephone number (for the courier company to contact you) before the item is shipped.
We do not ship to PO Boxes, as in most cases you will need to sign for your item.
Orders placed on weekends or public holidays will not begin processing until the next business day.

Heavy Duty Design

Extra durable construction with galvanized steel for year-round stability

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