On this particular allotment we have done three polycarbonate polytunnels so far. Pictures shown two AG polytunnels size 3m x 4m with 4mm twin wall polycarbonate cover and one AG Titan size 3m x 10m with 6mm twin wall polycarbonate cover. For all installed polytunnels we used timber base which increased each polytunnel up to 2.3 - 2.4 meter high. AG and AG Titan models you can find on our online shop. Please contact us if you require any assistance or have any questions, My Greenhouse.ie Team!