LaserPecker Pre-Filters for LX2 Smoke Purifier (5 Pcs)

This pre-filter is designed to capture large particles and debris, and should be replaced when more than 70% of its surface is covered by dust to maintain optimal performance. It is compatible with the LX2 Smoke Purifier and comes with four filters per purifier.

• The description claims that replacing the pre-filter when over 70% of its surface is covered by dust maintains optimal performance.