Harvia WL475 - Protective Sheath for Harvia Linear 16The Harvia WL475 protective sheath is designed for Harvia 16 and Linear 16 wood burning heaters. It reduces required clearances to combustible materials, allowing the heater to be installed in smaller spaces. The sheath attaches directly to the heater and follows its shape for a clean, finished look. Made from black painted steel, it is available as a full or one sided version that can be installed on either side of the stove.