The 16ft (4.88M) wide and the 21ft (6.4M) wide tunnels are geared for commercial use because ventilation improves dramatically with tunnel width brought about by greater height and volume of air.
E-mail: morrispgh@aol.com
Morris Polythene Greenhouses Ltd. 53a Lenagh Road Drumlea Omagh Co Tyrone Northern Ireland BT79 7RG Tel/Fax:- (028) 8164 8205