Can filter dust, prevent dust from entering the motor room. Multiple filtration, purifying the air.Flat design provide more filter area on average. This effective vacuum cleaner accessory helps remove household dirt and dust and improve indoor air quality. Replacement filters for NT 65/2 Eco,NT 65/2 Ap, NT 72/2 Eco,NT 72/2 Tc,NT 75/2 Ap,NT 75/2 Me,NT 75/2 Tc Vacuum Cleaner Robots. For optimal performance of your vacuum, it is recommended that you replace your filter every 1-3 monthes. Colour: as shown Material: plastic Size: 29.6 x 14 x 5.5cm Package Contents: 1 x Filter elements Only the above package content, other products are not included. Note: Light reflection 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.