Ventsetter 5000 Ventsetter 5000 Greenhouse Outstanding Features Superior strength ROLL-FORM truss, purlins and gutters insure unmatched structural integrity. Condensate control features built in. Available with extended columns to accommodate overhead retractable shade systems. Value Components are shipped pre-punched and cut to length, simplifying the installation. ROLL-FORM components nest one into the other during shipment, substantially reducing freight rates. Accessory Equipment Roll-up side or end wall curtains. Swing, sliding or roll-up door assemblies. Automated over-head retractable shade systems. Circulation fans and high-efficiency fog systems. Space heaters, hot water heaters or radiant heating systems. Sstationary, rolling or portable bench assemblies. This structure is engineered to meet stringent International Building Code (IBC) specifications.