2331E Replaces: Exact fit replacement for Enviro EF-126 Fit: Enviro pellet stove EF1, EF2, EF3, EF5 Evolution, Meridian, Mini, Empress FS. Also fits Hudson River Chatham, Davenport, Kinderhook. Also fits Vista Flame VF100. Size: Approximately 13'' x 7-1/2'' x1'' with 2-1/2'' diameter hole. Material: Ceramic fiber alternative blanket which, unlike ceramic fiber, is not classified as carcinogenic or hazardous. Blanket is soft, flexible & withstands 2100F. Material is comparable to Superwool Plus, SuperMag, and Insulfrax. Made in the USA by Lynn Manufacturing, Inc. Lynn 2331E Replacement Enviro, Hudson River & Vista Flame Firebox Insulation EF-126