P163910 Synthetic, Efficiency Beta 1000: 23 micron
P167410 Cellulose, Efficiency Beta 1000:
23 micron
P167425 Cellulose, Efficiency Beta 2: 17 micron
P167514 Cellulose, Efficiency Beta 2: 5 micron, Efficiency Beta 1000: 24 micron
P169344 Synthetic, Efficiency Beta 1000: 7 micron
P566270 Synthetic, DT High-Performance, Efficiency Beta 1000: 5 micron
P566271 Synthetic, DT High-Performance, Efficiency Beta 1000: 8 micron
P566272 Synthetic, DT High-Performance, Efficiency Beta 1000: 12 micron
P566273 Synthetic, DT High-Performance, Efficiency Beta 1000: 23 micron
