Ideally suited for mounting printed circuit boards. Perfect for applications where parts, sensors or indicators need to be visible. Ice Blue version is almost totally transparent to blue, white and near white LEDs, readouts & displays. IR Red version is almost totally transparent to infrared devices. Integral card guides accept 1.5mm (0.062") P.C. cards. Lap joint construction provides protection against dust accumulation and water. Molded from flame retardant, translucent polycarbonate (material carries a UL flammability rating of 94V-0). Lid is secured with M3 x 10mm Philips machine screws, threaded into integral brass bushings.