Depth-LOK XTR Series fine micro-fiberglass filters are designed for the removal of ultra-fine 0.3 micron particles such as iron sulfides (FeS) from a gas stream, as well as, coalescing liquids for easier removal. When an absolute 0.3 micron rating is required in an depth style option, the Depth-LOK XTR Series is field tested and proven to do the job.