You can think of a sill as a gateway that helps prevent water and air from entering your home. The main components of a sill are the sill deck, the sill cap, and the substrate.We designed and developed Granite Door Frames and Stone Window Sills based on customers' requirements and feedback. It is the result of combining different kinds of raw materials at a perfect ratio. We assure that it has optimal performance, of which stone Door sill and limestone door sill are the highlights. Moreover, it has an appearance that is designed based on market trends.Want to know more about stone door sills, First Stone is your best choice of stone door sill manufacturer.