This product has been discontinued, is no longer available and there is no direct replacement for this part.
You can contact the fireplace manufacturer, if they are still in business, or the authority having jurisdiction
(City, County, State, Provincial gas, plumbing, building authority)
to find out if there are any alternatives to replacing the fireplace.
Mercury flame proving switch used in some older direct vent fireplaces.
Wire and probe 24'' long total.
***Contains Mercury. We cannot ship to California.
Napolean WS 660-4