Free Storage Until Spring 2022

Sigma Automatic Ventilation Window

Size: 3′ × 1.4′

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

  • Galvanized Steel Structure
  • Rust-Resistant
  • 3′ × 1.4′
  • Exclusively works with greenhouses from our Sigma collection
Backorder now - will be available end of January 2022
Sale price
$95 USD
Regular price
Regular: $95 USD
Have questions? Call us 1-877-669-1286