Our selection of E-Vent moulding profiles includes this Massive Crown profile. When bold exteriors call for equally bold trim, Massive Crown moulding provides an outstanding solution. Make a bold statement with this finely detailed profile. It features versatile and elegant details, and a durable molded urethane construction. Urethane is non-porous, so it does not suffer moisture damage like warping, cracking, peeling and rotting. In addition, urethane trim does not offer a food source to insects. Detailed crown moulding creates a beautiful transition between the exterior of the home and the roof. The E-Vent system provides one of the most aesthetically pleasing means to roof ventilation.