From the Manufacturer
The Executive Rectangle solid granite address plaque with 4-Inch Black polymer numbers is a do it yourself kit will everything you need in the box. It includes Black polymer numbers 0-9 twice, tube of adhesive glue and mounting hardware. This plaque adds an unique and elegant look to any home or business.
Qualarc EXE-4702AL-PN Executive Rectangle Address Plaque in Autumn Leaf Natural Stone Color with 4-Inch Polymer Numbers - QualArc - 814728010117