Beaver Dam Woodworks Large Poly Windmill. Patriotic. Large Windmill measures 60" to the top of the propeller, 42" to the top of the tower and has a 17" outside bottom diameter. Our Poly windmills are made from a recyclable material that will not splinter, crack, or fade. Our windmills are built to last and designed to beautifully enhance any landscape. Handcrafted in the United States by Expert Amish Woodworkers.