This substrate is a marine grade plywood panel that has been primed painted and sealed to protect it from the outdoor environment. It is available in several colors such as white, green, red, maroon, and blue to name a few. It also comes in single or double sided varieties.
These signs can be treated as plywood. They can be screwed or nailed through. Brackets can be used to attach these signs to posts or to a wall. Care should be taken not to chip the paint during installation.
These signs should be rinsed off with water. To clean stubborn spots use a mild detergent and soft cloth. Care should be taken to waterproof these signs as they are susceptible to water damage.