The manufacturer's Intelligent Exhaust and Ventilation Systems utilize the CPC-3 technology for precise control of exhaust, make-up air, and combustion air applications. The systems can be combined with the company's air intake systems for balanced exhaust and combustion air. A four-page color brochure on the system is available. The literature includes applications, typical installations, and a list of prominent jobs where these systems have been installed.

Tjernlund Products Inc., 1601 Ninth St., White Bear Lake, MN 55110-6794; 651-426-2993 or 800-255-4208; 651-426-9547 (fax);

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