RowTunnel,10ft long Garden Hoops for Hoophouse,Plant Cover &Frost Blanket For Season Extension Support, 20-Pack Never rust garden hoops for hoophouse Ideal for plant covers, row cover and frost protection cover support Tunnel hoop span and height can be ajustable Arch height: 27~40 Arch span: 39~81 1/4"*10', pack of 20, 1pc of 10ft hoop is jointed by 2pcs of 5ft hoops with 1pc of ferrule