T20 Woodburing Stove HEAT CIRCULATION by Hearth, Stove & Patio Call for Price Blower Kit with Variable Speed and Thermostatic Control - $183.20 Outside Air Kit - 4 feet insulated flexpipe (4" dia.) with through the wall vent - $16,656.00 Blower Kit with Variable Speed and Thermostatic Control Outside Air Kit - 4 feet insulated flexpipe (4" dia.) with through the wall vent HEAT CIRCULATION