Brand: Philmore LKG. MPN: 12-609. Phenolic Protoboard 2.56" x 3.23". PRINTED CIRCUIT BOARD / Protoboard. Product Specifications: 2/pkg, solder type, 560 copper donut pads in a 20x28 grid, spaced on .10" centers, (4) mounting holes .140" are spaced 2.24" & 2.92" centers, board thickness: 1/16".