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Keystones - decorative shaped blocks used to simulated structural keystones used to support and spread loads created in extended spans using masonry or concrete construction. EPS Foam keystones can be made as a simple keystone, a double keystone (layered), or a custom designed keystone. Sometimes the keystone is solid and the pieces that connect are cut to match the angle. Other times the keystone is cut to fit over the arch band or shape it is to decorate. Generally keystones are found above doors, windows, or arches. These are a very inexpensive yet highly decorative feature to add design value to a house.




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