10ft Long, 9-Pack, Heavy-duty Double Hoops for Plant Cover Support, Grow Tunnel Hoop, Hoop House Support,Plant Cover &Frost Blanket For Season Extension Support Heavy duty double hoops for row cover, plant covers, frost protection cover support Uv-resistant double garden hoops, never rust, hoop house support 1/4"*10', Pack of 9, 5pcs of strong connectors per pack, so totally 18pcs of hoop and 45pcs of connectors per set Heavy-duty Double Hoops can more effective Resistance to heavy snow and frost than single hoop. Arch height: 27~40 Arch span: 39~81arch span: 25"~30", approximate arch height: 17"~19",as the important basis of installation., 1pc of 10ft hoop is jointed by ferrule with 2pcs of 5ft long hoops