The KH Series is a line of low-noise, high-power-density radial fans with free-running impellers, the company says. Applications include air-handling units, hygienic systems, and filter units in clean rooms. The fans feature a 100-percent, speed-controlled external rotor motor and new backward curved impellers made of waterproof aluminum. The fans are available with impeller diameters from 9.84 to 27.95 inches. The closed motor offers Class IP 44 protection against humidity, with maintenance-free sealed ball bearings, says the company. Air volume is adjustable using various pressure and temperature controls.

Rosenberg USA, 1503 Rocky River Rd. North, Monroe, NC 28110; 704-289-5423; 704-283-7170 (fax);

eProduct #184