4-pack 5 Micron PP Electronic Grade Water Depth Media Filter. This water filter is compatible with commercial critical processes and is made of durable plastic material. It has 1-stage filtration method with polypropylene and is capable of removing micro-organisms. This water filter has a 1/4″NPT In/Out capacity and has a model number of CPEPD5 0N0001AA. It is suitable for commercial use and comes in a pack of 4. I can sell these individually if that is more convenient for you.