Accessories Products | Building Stone | Accessories | Indiana Rockface Sills Indiana Rockface Sills Indiana limestone sills with rockfaced front. Geology: Limestone Height: 2.25" Length: 48" Depth: 2.50" Colors: Gray Printable Spec Sheet Installation Instructions Ask Us a Question Contact a Dealer Download Our Catalog Indiana Rockface Sills Featured Images Projects using Indiana Rockface Sills Accessories The Beauty of Real Stone Fond du Lac Natural Stone puts knowledge, talent, and technology to work every day to bring top quality natural stone elements to your building design. PROJECT GALLERY