20'x30' Greenhouse Frame Semi-Gable wind They are made from high-grade

They are made from high-grade galvanized steel that can withstand wind and snow

Heavy duty relays and receptacles

This part is also available without the monitor

You will need an additional Humidistat

It may be wired for heating or cooling to control your exhaust fan

20'x30' Greenhouse Frame Semi-Gable wind They are made from high-gradeHortitech greenhouse frames in 20'x30' are built for resilience and are competitively priced. These small greenhouses are made from high grade galvanized steel that can withstand wind and snow. When you buy greenhouse frames from Hortitech, you get greenhouse frames direct from the manufacturer that are 100% American made with no cheap pre fabricated foreign parts. This product is ONLY the steel greenhouse frame. All steel, purlin, and hardware for