This is a PCB for mounting ALPS RK27112 stereo potentiometer.
PCB is with dimensions 28x32.5 mm (1.1×1.28 in.).
PCB thickness: FR4 1.55 mm. Copper thickness: 35um (1oz). Surface finish – Nickel Gold (ENIG).
It is one-layer design with solder mask coating on bottom layer for best durability. Silk screen is placed on the top of the PCB.
PCB has abilities for mounting 1 pcs. ALPS RK27112 (Blue velvet) and 2 pcs. 4-pins Molex Headers & Wire Housings (Mouser part # 538-171856-0004) for INPUT and OUTPUT connectors.