What is the micron rating?

We have not had our Classic Bonded filter pad tested for its micron rating since it has an open weave designed to trap coarse particles. If you are looking for a filter pad to trap large to fine particles look at our Premium True Dual Density Filter pad. You can also layer are Classic Bonded filter pad with our Polishing Filter Pads available in 50 Micron and 100 microns.