Ceramic Catalytic Combustor for Vermont Castings Encore and Defiant Flexburn Wood Stoves Made in the USA by Condar, the Combustor Experts. Measures 13" long X 2.5" wide X 1" thick. Condar catalytic combustors are made of high-quality materials; approved by the Environmental Protection Agency. 30-day warranty. For Vermont Castings Encore and Defiant Flexburn models only.