RP series fans. This group is primarily used with high flow situations. This includes drain tile, gravel or where settling has occurred beneath the floor.
The RP145 fan can handle a wide range of situations. It is designed to move large quantities of air with drain tile systems or gravel but also able to produce a maximum of 2.1WC for tighter sub soils. If you can do 2 suction points with tight soils this fan will provide good results with minimal energy usage.