Tunnel Type Polyhouse -Fan Pad Main Features Of Structure Stub type-anchoring foundation.Multi-span total galvanized and nut bolted structure.Grid size 8 mtr X 4mtr providing superior structural.Single piece G.I. Gutter 500 mm wide & 1 mm thick.Aerodynamic shape along all peripheries to resist more wind velocity.Aerodynamic shape along all peripheries to resist more wind velocity. The structure is designed to resist wind velocity up to 140 Km/Hr.Polythene fixation shall be done with aluminium profiles & zigzag spring lock.Genigar200 micron UV stabilized polyfilm for top and side (UVA white diffused).Single shutter door aluminium (sliding) with anti-chamber for entry into greenhouse of