Tjernlund Products has introduced a new series of rooftop draft inducers for sale through HVAC, plumbing and industrial distributors. The inducers are available in RT and RTH versions. RT models are designed for exhausting gas or oil heating equipment, gas fireplaces and ovens. These units include a fan-proving switch, plus Tjernlund offers several optional heater interlock controls, including the UCRT combination interlock and speed control. RTH models are designed for sold fuel fireplaces, stoves, ovens, barbecues and general-purpose exhausting. RTH models include a wall-mounted speed control. Both versions come in two capacity ranges-from 250 to 750 cubic feet per minute and 750 to 1500 cfm. The Tjernlund inducers can be mounted on tile-lined chimneys or metal flues and have variable speed motors for fine-tuning each installation.

Tjernlund Products, 1601 Ninth St., White Bear Lake, MN 55110-6794; (800) 255-4208;