The HEPA-style filter uses E12 HEPA material, and captures up to 99.5% dust, allergens, and particles. The parts and accessories are made of environmental-friendly materials and are almost maintenance free. To keep your robot running at , the parts are recommended to be replaced every 2-3 months. It is easy to be replaced and installed on your robot vacuums. Compatible Models for Advertising Machine 2 / Advertising 3.000 / AD3.200 / AD 3 Premium / AD 3 Premium Fireplace / AD 4 Premium Colour:yellow Material:plastic Package Contents: 2 x filter 1 x cleaning brush Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.