3D Signs to use in iOS ARKit 4

We need to make the LED sign, the base, and the top piece into objects. We need to be able to easily modify the height and width of each object. We need aluminum and brick styles for the base.

The LED sign portion is in increments of 240x240mm. A common size we use is 1920mm (wide) x 960mm (high)

In our app the user will pick the base type, width and height, the LED size, and the top plastic height and width. We need to make some common options based on the pictures provided below.