KH Series low-noise, high-powered-density radial fans with free-running impellers are designed for ventilating air and nonaggressive vapors and fumes. The fans feature a 100-percent speed-controlled external rotor motor and new backward-curved impellers made of waterproof aluminum, the company says. According to the manufacturer, these compact fans, designed for minimal maintenance, are the easy-to-install choice for such units as air-handling units, hygienic systems, and filter units in cleanrooms. The impeller diameters range from 9.84 to 27.95 inches. The closed motor offers Class IP 44 protection against humidity. Air volume is adjustable using various pressure and temperature controls.

Rosenberg USA, 1503 Rocky River Rd. N., Monroe, NC 28110; 704-289-5423; 704-283-7170 (fax); sales@rosenbergusa.com; www.rosenbergusa.com.

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