Create A Mini Poly Tunnel For Your existing raised Beds. build A Grow-frame Directly On To A Reaised Bed Or Create A Seperate Hinged Frame For Extra Easy Access As Shown, Then Add Your Choice Of Covering, Each Set Comes With Complete Instructions & Can Be Constructed Easily. (raised Bed & Wooden Frame Are Not Included)pipe is Pre-cut 25mm Mdpe Water Pipe, Its Uv Stable & Will Last For Years.polythene Cover Is 80 Micron, V Stable & Fits 4ftx 4ft Rasied Beds With Overall Measurements Of 9ft X 9ft/2.6m X 2.6m