Warnock Hersey

Warnock Hersey is a testing laboratory, not the name of a model of a stove! Like UL and CSA and other test labs, they put their name on the stove label to assure that officials know the stove was tested.
http://www.intertek.com/marks/wh/

Below are some of the "marks" similar to UL, that Warnock Hersey and their parent company use.