As sole licensee of the prestigious Smithsonian Collection of weathervanes, finials and cupolas, only Good Directions can offer you exquisite designs inspired by one of the jewels of American architecture -The Smithsonian Institution Building, popularly known as The Castle, in Washington, D.C. -and from the precious historical collection of the Smithsonian Institution"s museum pieces. Our Smithsonian Collection by Good Directions features classic designs reflecting timeless American style. The finest architectural lines, impeccable construction materials and intricate craftsmanship have gone into this superb line. You will instantly recognize and appreciate that these exclusive items are indeed showpieces for your home. Each piece in the line includes the distinctive Smithsonian Collection by Good Directions logo. Wood Rooftops must be shingled or covered with a metal roof. When installing a weathervane or finial into a 30" or larger Cupola, an Extension Rod is required.