I love 'state of the shelf' solutions and this one is a beauty! Have you ever spent more on the enclosure than you did on components for the project? Finding a proper box to put a circuit in is a constant challenge. After my Dad got a new fence I started looking at the plastic material they made it from and got to thinking.
4"x4" PVC fence post comes in 72" lengths at your local home improvement center for around $15 each. One post will supply you with boxes for many projects. It can be cut to any length or depth and is easily marked and drilled for component layout.
Best of all a four inch wide box costs just 10 cents per inch.

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