This is a standard size subbuteo goal, the only difference is the deep measure (the standard ones are 55mm deep, mine's is 10mm because i like more of this porpotion and feels better in my table). 

I allways make my own subbuteo goals, never by one because of the price, i prefer to invest on times rather goals, and since i have a 3d printer i decide to desing my own goal to have goals of a single piece, print in place, with the precision measures.

Then i used a simple net that i found in home for cover the goal (you can see in the pictures).

I made also this rectangular bases on the sides for the ones who want to glue or screw the goals on the subbuteo tables