8 to 12 meter greenhouse with roof vent

{"cid":"91223171","title":"IGREEN Large Multi-Span Plastic Greenhouse For Plants Green House Greenhouse Roofing Material","imgUrl":"https:\/\/img.chinax.com\/nimg\/8b\/dd\/c5e03020022e46cc9bead93a507c-200x200-1.jpg","attrs":{"Price":"$11.50-15 \/ square meter","Brand Name":"IGREEN","Model Number":"WL1232","Minimum Order Quantity":"300 square meters","Place of Origin":"Fujian, China","Manufacturer":"IGreen","Instruction for use":"For flowers and vegetables growing","Size":"Large","Material":"PE, 275gsm zinc coating hot dipped galvanized steel pipe","Type":"Multi-Span Agricultural Greenhouses","Cover Material":"Film","Layer":"Single","Product name":"super wide greenhouse","Surface material":"film","Covering material":"150\/200micron plastic film","Film type":"Film type","Roof vent":"No","Tunnel width":"12--15 meter","Length":"Customized","Shoulder height":"3--5 meter","Roof height":"5--7 meter"}}

{"cid":"91223525","title":"Large - scale Venlo Glass Greenhouse for Carnation Farming and Growing","imgUrl":"https:\/\/img.chinax.com\/nimg\/d6\/54\/ecaf07122c139ed93f965eb1681b-200x200-1.jpg","attrs":{"Price":"20-30$\/sqm","Brand Name":"sainpoly","Model Number":"01","Minimum Order Quantity":"1000\u33a1","Delivery Time":"normally 30 days","Place of Origin":"Qingzhou city, Shandong Province","Payment Terms":"T\/T","Certification":"CE certificate","Supply Ability":"1 million hectares","Packaging Details":"in bulk","Installation":"Professional Installation","Ventilation System":"Roof and side vents","Cooling System":"Evaporative Cooling","Span":"6.0~12.0m(customization)","Frame Material":"Aluminum\/Galvanized steel","Produce Time":"Within 30days","Color":"Transparent","Frame":"Hot galvanized steel","Roof Height":"4 to 8 meter","Covering Material":"Single glass or hollow glass","Growing Method":"Hydroponic System","Heating System":"Boiler\/Hot Water","Material":"Glass\/Aluminum","Maximum Rainfall":"140mm\/h","Wind Load":"0.40KN\/m2"}}