Greenhouse Frame: Wind load: 0.5 KN/M2, Snow load ... Single or double roof vents by the rack. Greenhouse Frame details:Modern appearance Stable structure High intensity Over 90 ... 9.6M, 12M, Section: 4M, 4.5M, 5MShading, heating, cooling, irrigation, hydroponics, and climate control systems can be installed ... motors, cooling pads, fans, air circulators, climate control, heating systems dehumidifiers, etc.