Automatic Vent Opener - No Base Polyethylene You can drive over this

You can drive over this without problems

With 60% of its total composition being made of high nitrogen nitrate levels

especially for hands with arthritis

Approximate Cell Size: 3 1/8 in x 3 1/8 in x 3 in Deep

57 (fl oz)

Automatic Vent Opener - No Base Polyethylene You can drive over thisDescription Specs FAQs Protect your plants from overheating! This easy to install greenhouse vent can be placed in the roof or end wall to provide supplemental ventilation for extremely hot conditions. Vent installs in minutes with a pre formed spring wire and channel locking. During moderate weather, high tunnels are generally vented by rolling up the sides and opening the doors on each end. However, extremely hot and humid weather often requires