Exterior-mount Auto-Draft® power venters are suitable for side wall or rooftop venting. By adding the CPC-2 constant pressure controller, the fan speed is automatically regulated based on a user-set manifold-vent pressure, resulting in ideal draft and true energy savings, says the company. Features include simple interlock connections, adjustable pre- and post-purge settings, and fan speed breaking to quickly reach the pressure setpoint when exhaust loads are suddenly reduced.

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