Designed to support long-lasting performance and cleaner air, this 4-pack of Flux Beam Air Pro Pre-Filters is made from durable, high-quality glass fibre. With a 10mm thickness, each filter is engineered to trap larger airborne particles such as dust and debris before they reach the finer HEPA and carbon layers. Regular replacement of the pre-filter extends the life of your full filtration system, helping maintain a safe and healthy maker space. * Pack of 4 pre-filters for the Flux Beam Air Pro * Made from durable glass fibre with a 10mm thickness * Captures large airborne particles for improved air quality * Helps protect and extend the life of main filters * Ideal for classrooms, workshops, and fabrication spaces