A molding composition exhibiting bleach resistance includes a polyoxymethylene matrix polymer, from about 0. An apparatus may comprise a memory configured to store a data structure with a set of modulation and coding schemes available to an orthogonal frequency division multiplexing system, each MCS having an associated pilot dwell time. The first end is closed, and the second end is mounted on the base wherein the first tubular filter defines an inner chamber that is in communication with the air inlet.