Each Power Pull system is custom designed. We work with you to build the best system for your greenhouse.

• Push-pull or suspended? Click here to learn more about the two options.
• What type of layout? Slope-flat-slope, Slope/slope, or Flat/horizontal?
• Do you need a black out or double curtain?
• What fabric?

There are three ways of installing retractable shade:

1. Exterior retractable shade (an Abri system): This shade goes high enough above the structure so it won't interfere with the vents and uses cloth (such as the Svensson F series) designed to "breathe" and exhaust air between the shading and aluminized reflective components. It is the most efficient as it reflects radiation before it enters the greenhouse, but is expensive as it requires additional structure to withstand wind loading.
2. Interior retractable shade: This allows for even shading (plants dry out evenly) and is primarily used with natural ventilation. The roof vents are opened and the shade completely closed. The greenhouse is ventilated through the shade.
3. Interior retractable energy/shade: Regular energy curtains must be left open to match the area opening of the vent position. This will allow a band of unshaded light that may dry out plants on the bench or floor.

Learn more by reading Greenhouse Growers's Goldilocks in the Greenhouse article.

Dual curtain system (shade and black out) at DeJong's in Pella, IA