The House Numbers are 25cm high and made of 1.1mm thick Marine Grade Stainless Steel (316). There are three designs - Frog, Gecko and Fern & Butterfly.
The numbers come with several strips of double-sided tape on the back. To attach apply 2 or 3 small dabs of silicone, liquid nails or similar. The tape will hold the number in place while the glue sets. Clean with a damp cloth or stainless steel cleaner.