Wood filter with 8 PTFE-coated cartridges for vacuuming large amounts of wood and fiber dust of all kinds. The coating and its special geometry effectively prevent clogging. For the first time, it is possible to vacuum fibrous dust without a filter bag. The Wood filter is moisture-resistant and rot-proof, certified for dust classes M and L, and ensures a high dust separation rate of 99.9 percent. It is suitable for all new single-motor wet/dry vacuums with Tact system from Kärcher, such as the models NT 30/1, NT 40/1, and NT 50/1. To avoid confusion with other filters, the Wood model features a brown label.