black out greenhouse with ridge vents

{"cid":"91217855","title":"100% Shading Black Out Greenhouse Fully Automated Hydroponic Polytunnel Light Deprivation Greenhouse With Ridge Vents","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/30\/01\/4b6983154357a5523c0d86d3c807-200x200-1.jpg","attrs":{"Price":"20-35 USD","Brand Name":"BAOLIDA","Model Number":"BAOLIDA-Automatic Blackout Greenhouse","Minimum Order Quantity":"500 Square meters","Delivery Time":"15 work days","Certification":"ISO9001:2008","Place of Origin":"China","Payment Terms":"L\/C, D\/A, D\/P, T\/T","Supply Ability":"500000 square meters per month","Packaging Details":"Wooden Case Packing","Product Name":"Automatic Blackout Greenhouse","Shading System":"Outside Black and White Film","Optional System":"LED grow Light\/Cooling System\/Cultivation System","Features":"Automatic Control System\/Monitoring system","Covering":"Black and white film\/Transparent PE Film","Length":"30-60m","Width":"8-9m","Height":"2.8-5m","Material":"Hot Dip Galvanized Steel","Application":"Medical Plants Growing"}}