The 21" cupola is typically used on roofs with a width of 20 feet or less when there is only 1 cupola on the roof, so they are most commonly used on garages, sheds, and sometimes gazebos.

If you need a cupola for a roof that is wider than 20 feet, we suggest a cupola with a width of 24" or larger.

Still not sure what size is right for your situation? Check out our cupola size chart for more guidance or call our team of experts at 717-808-5711.