Media Streamline P-100 P200 Sp-Pad 20x30x2 Purolator Media Streamline P-100 P200 Sp-Pad 20X30X2 StreamLine Polyester Medias. Select from three choices of medias - 1/2", 1", 2" thicknesses. Made from multi-denier, recycled polyester fibers. Tackifier increases particle retention. 85 - 95% arrestance .