butterfly window strong greenhouse

Butterfly window greenhouse, vegetable greenhouse, flower greenhouse. It's suitable for vegetable planting, flower cultivation, seeding nursery etc. Easy to install and economical. Greenhouse adapts sharp arch structure, poly filmcovered, butterfly roof ventsystem, 50% ventilation rate, hotgalvanized pipe, high-capacity gutter,suitable for the for big area planting.1. FrameworkThe main arch uses oval shape galvanized steelpipe, with hanging pipestructure, and the interval section, top of thespan is reinforced.2. Covering150 micron thickness 5-ply poly film is covered ontop, and the film is fixed by galvanizedlock channel and plastic coatedwire.3. Ventilation systemGreenhouse chooses butterfly roof vent, it cangreatlyincrease the ventilation effect; sides and inside of greenhousecan choosemanual or motor drive ventilation system, easy to control.4. DoorSliding door, hot glavanized steel framework, covered by film.5. Shading systemInside oroutside shade system is available forcustomers, adapts rack &pinion transmission system or pipe & ropetransmission system.ModelSpanSectionLengthGutter heightRoof heightWind loadSnow loadWL969.6m5m5m*N3m5m0.6KN/m20.3KN/m2 Irrigation system, heating system, cooling system, lighting system etc is also optional.