3vo:
I have one of the flanged Polycase gizmos. I don't exactly know which model it is, but I could find out. The overall is about 2" W x 1-1/8" tall x 3" L and 3.5" between the bolt holes.
The lid will snap and stay on without using the 4 screws.
If it is not too much trouble could you check to see what series. I have been looking at the LP