Capacity in m3/hour at static pressure of: Model 1800-VFG-C Flange model with the flange on the front side for almost all applications. Divided air direction; up to 35% air enters only from the top side; above 35% also from the bottom side. Air inlet valve is equipped with a stainless steel central control arm. This inlet is executed with a slightly curved inner flap. The more square shape makes the control during minimum ventilation better. TPI-Polytechniek BV De Steenbok 24 5215 ME 's-Hertogenbosch Phone: +31 (0)73-656 91 94 E-mail: [email protected] The Netherlands Fax: +31 (0)73-656 69 33 Internet: www.tpi-polytechniek.com