The Franklin cupola of our Sundance Series is the perfect fit for your metal or commercial style building. With traditional style louvers, The Franklin cupola is manufactured of a solid Vinyl-pvc trimboard, with a metal roof & base with many color options to match or accent your building colors. - Made from a rot free cellular-pvc trim, 28 gauge metal & stainless steel fasteners that will stand the test of time. - Weathervane Mount standard. - Accomodate up to a 6/12 roof pitch. Base extensions are available for steeper pitch roofs. - Cupolas are engineered to withstand up to 120MPH winds. - Cupola size is determined from the width of the base. - Manufactured in USA by Royal Crowne.