Jameco Valuepro 21-227-R Circuit Board, Single-Sided, COPPER-Plated Blank, Phenolic, 12.0" L x 12.0" W, 12" width, 12" Length, Volts. Product type - blank pcb. Thickness (mm) - 1.6. Plating - copper plated. Jameco Valuepro 21-227-R Circuit Board, Single-Sided, COPPER-Plated Blank, Phenolic, 12.0" L x 12.0" W, 12" width, 12" Length, Volts. Unit Count : Circuit Board.