There seems to be a misunderstanding as to what is meant by the term Polytunnel. In UK the term is used for a walk-in structure formed of metal hoops at least 6ft./1.8 metres high covered with polythene sheet. Mine are 18ftt wide x 65ft. long -- Allan Day 41 Villa St. Hereford HR2 7AU allan@crwys.demon.co.uk Tel:- 01432 275443 (+answer m/c)