Sigma Roof Vent

Sigma Roof Vent

Approx Size: 3′ × 1.4′

Grow a flourishing garden unbothered by the sweltering summer heat. Easily control the airflow into your Sigma Greenhouse to bring in a refreshing breeze that helps your plants grow healthy and strong.


  • Made from galvanized steel and polycarbonate for long-lasting durability.
  • Manual opening so you can control the ventilation of the greenhouse.
  • Rust-resistant and low maintenance year-round.
  • Simple design for fast and easy installation.
  • 3′ ft × 1.4′ ft size – exclusively designed for Sigma Greenhouse models.
Regular price $55 USD
Regular price USD Save $-55 Sale Sale price $55 USD
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About Sigma Roof Vent

Please note: this window only fits Sigma Greenhouse models.

The Planta Sigma Roof Vent is a fantastic add-on for your Sigma Greenhouse. It will efficiently increase air circulation, maintaining a comfortable temperature, which is essential for healthy plant growth and disease control.

The number of suggested windows is determined by the size of the greenhouse, the environment and growing zone in which you live, and the plants you would like to cultivate. However, the following numbers are a general guideline:

  • Sigma Urban (10x13): 2-4 windows
  • Sigma 20 (10x19.5): 4-6 windows
  • Sigma 26 (10x26): 6 windows
  • Sigma 32 (10x32): 6-8 windows

We recommend installing an even number of roof vents on either side of the greenhouse for optimum airflow.

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Rated 4.5 out of 5 stars
Based on 2 reviews
Total 5 star reviews: 1 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
QualityRated 5.0 on a scale of 1 to 5
DurabilityRated 5.0 on a scale of 1 to 5
InstallationRated 3.5 on a scale of 1 to 5
Customer ServiceRated 5.0 on a scale of 1 to 5
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2 reviews
  • BO
    Bobby O.
    Verified Buyer
    I recommend this product
    Location Arizona
    Rated 5 out of 5 stars
    10 months ago
    Roof Vents

    Have more air flow and plants are doing great.

    PG Profile picture for Planta Greenhouses
    Planta Greenhouses
    9 months ago

    Hi Bobby,

    That's great to hear! Increased airflow can make a big difference in plant health. Keep up the good work with your plants :)

  • KJ
    Kenneth J.
    Verified Buyer
    I recommend this product
    Location Michigan
    Rated 4 out of 5 stars
    10 months ago
    Sigma Roof Vent

    The installation was straightforward and operated efficiently by keeping good airflow throughout the day with temperatures in the 90s.

    PG Profile picture for Planta Greenhouses
    Planta Greenhouses
    9 months ago

    Glad to hear your new roof vents are keeping things cool even on scorching days 😅. Enjoy the fresh air! 💨😊

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Planta Greenhouses is dedicated to deliver your order promptly, so you can begin using your greenhouse products right away.

Because greenhouses are packaged in large boxes, they have unique shipping requirements, including: 

  • We will contact you to confirm shipping price, based on your location and order size.
  • Shipping on most orders is between $250 and $450. Deliveries to remote areas may cost 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 will make every effort to ship your order in the fastest possible manner, and by the mode of transportation that you specify; however, in the event of no specific instructions, we will use our judgment and ship the best, fastest and most economical way. We are not responsible for delayed delivery due to conditions beyond our control.
  • We do not ship to PO Boxes, as in most cases you will need to sign for your item. 
  • White glove delivery service isn't available. The greenhouse components are delivered in multiple boxes, the largest of which weighs 80lbs. The greenhouse will be delivered to your driveway. Please make arrangements to have the package moved to its installation location. 
  • Orders placed on weekends and public holidays will be processed the next business day.


FAQs Sigma ventilation window

Can I add windows for my greenhouse later?

Yes, roof ventilation windows work as an add-on and can be installed only once the greenhouse installation is complete.

How big is the window?

The Sungrow Ventilation Window is exactly 3 ft wide by 1.4 ft tall (91.4 cm by 42.6 cm).

How many roof Ventilation windows are recommended for the greenhouse?

We strongly recommend installing an even amount of roof ventilation windows so that you can place at least one on each side of the greenhouse.

What greenhouse models can this window fit?

The Sigma Ventilation Windows will only be compatible with Sigma Greenhouse models.

What is the window made out of?

The roof ventilation windows are made of the same material as your Planta Greenhouse: shatter-resistant polycarbonate and strong, galvanized steel.