Flame Retardant ABS Enclosure , 3.9 X 2.15 X .82 Key Features: Electronic instrument enclosures, ideally suited for mounting printed circuit boards. Integral card guides accept 1.5 mm (0.062 Inch ) P.C. cards. Lap joint construction provides protection against access of dust and splashing water. Designed to meet IP54 Molded from economical black plastic Link here to our flame retardant ABS plastic version. Lid is secured with self-tapping #4 x 0.5 Inch philips screws.