This PCB board includes all of the wiring for DC jacks, Input and Output and 3PDT Stomp switch, and a perfboard area of 18 by 21. ThePCB board fits in 1590 B sized box with room for a 9V battery. 
Here’s a picture of the PCB with Switch and jacks. 
Here’s a picture of the PCB fit into 1590 B box from the bottom. Leaves just enough room for a battery. 