ProtoBoard, Fits Hammond Box 1593Q 2.4" x 2.7"
The PC board is 2.4 x 2.7 inches. A "battery door" allows access for one or two AA, up to 4 AAA or a Nine volt battery. (user must supply holder). Board material: FR-4 with one ounce copper. Holes are paired and .042" in diameter to accept leads from common components. Board mounts with four 4-40 screws, included. (Box NOT Included).