Do you make custom sized or custom material house signs? Abbey October 13, 2017 00:28 Updated Follow No we don't. Our address plaques only come in one material and in two different sizes; Large (400 x 200mm) and Small (300 x 150mm). Related articles How do I mount my house plaque? Do you install letterboxes? What is the material of your house signs? Will your vinyl numbers peel off over time? Can you mount the numbers on the letterbox for me? Comments 0 comments Article is closed for comments.