Do Poly Shutters Burn?

interior burn shuttersMany web sites selling "Poly" shutters, a synthetic material that does not contain wood, used for making interior shutters, claim that their shutters will not burn. We did an quick experiment using a small lighter and a piece of a synthetic louver. I placed the flame to the louver (see picture below) and found that the synthetic louver, in fact, did not burn. Instead, the louver quickly melted emitting a thick black smoke with a choking odor similar to a burning car tire.