Horton (Roseville, MN) has introduced the WindShiftTM WSE modular fan with a swept-blade design that generates greater static pressure at slower speeds. The fan is available in diameters of 24 to 41 inches (610 to 1040 mm), and 2.44 to 5.94-inch (62 to 151 mm) pitch widths. All of the WindShift blades contain UV-stabilized materials, and are constructed with clamshell knuckles that clamp each blade to a 0.25-inch (6 mm) steel center disk. This allows blades to be set to a specific pitch angle for increased airflow. Fans are provided with 3 to 16 blades, equally spaced or staggered to modulate system noise. In addition to flat-plate center disc mounting, straight- and tapered-bore adapters are available. Other options include clockwise or counter-clockwise-rotation, and custom center disks for virtually any blade count, fan diameter, and pilot or bolt circle pattern.

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