Car Parks/ Traffic – No unauthorised parking sign. Available in 22swg aluminium and reflective 75 series (post fix/wall fix). 75 series have class 1 engineering grade reflective faces and are applied to a heavy duty composite back plate for post fixing and 22swg aluminium for wall fixing. This gives the option of either post or wall fixing. Please specify when ordering. Available in a variety of sizes. Not exactly what you are looking for?