Agfabric Hoop House Kit, Mini Greenhouse, Grow Tunnel Within Support Hoops,Plant Cover &Frost Blanket for Season Extension Support (24FT Long) Design for plant cover, frost protection cover and mini greenhouseprovides ideal environment for rapid germination and growth of young plants Use hoops to support garden row covers, plant covers, protecting plants from frost, insects, birds, or intense sun Row Cover for safe and effective barrier excludes many types of pests,including insects,birds and animals,aslo protect plants from overheat and frost. arch span: 31"~63", approximate arch height: 23"~31",as the important basis of installation 1pc of 0.55oz 7*25ft row cover, 11pcs of 1/4"Dia,8ft long hoops included,each hoop is jointed by 2pcs of 4ft long hoops and 1pc of ferrule