The B-Series, our most popular line of enclosures, is built from Aluminum and Steel. The instrumentation grade B-Series is durable, dependable, and long-lasting. This enclosure utilizes an internal aluminum chassis which includes a multi-position shelf that can be used for a variety of purposes, or not used at all in order to provide more internal space. The B enclosure is a popular solution for Medical, Telecom, Audio, Instrumentation, RF communications and Consumer Electronics, plus Electrical & Industrial applications. The B-Series is available with Blue (BU) or Black (BK) steel covers and both have Eggshell White aluminum front & rear panels. The internal aluminum chassis & shelf are unpainted.