Open Buildings Stencil is a pattern created by Carolyn Dube, a mixed media artist. She designs stencils that allow her to work with various mediums to create a variety of looks but most of all that are fun to play with? Use StencilGirl Products stencils for your mixed media, encaustic, paints, spray inks, scrapbooking, markers, PanPastels, fiber arts, embroidery, beading, felting, and more! The 7 mil mylar stencils are thick enough to be durable and long lasting, yet they are thin enough to provide a seamless look in your art. Made in the USA.. 6 inch by 6 inch. 7 mm mylar is thick enough to be durable, yet thin enough for a seamless look in your art. Made in USA.