1: with excellent filtering effect of exhaust air, high efficiency filter dust, to prevent large particles of dust into the motor room, motor damage of high-speed operation,thus ensuring the service life of the vacuum cleaner.2: Can filter ,can cause respiratory allergies harmful parasites.3: Washing, cleaning after the cycle of repeated use, clean and sanitary.Note:The HEPA filter can filter out the harmful micro-parasite what can cause respiratory allergies .To ensure effective filtration, should be replaced filter once every 6 months.Compatible with: for Electrolux:Accelerator: ZTI7635 ZS201 ZS203 ZAC6700, ZAC6705, ZAC6707, ZAC6716, ZAC6717, ZAC6742, ZAC6805, ZAC6806, ZAC6810, ZAC6826, ZAC6827, ZAC6899for Ergobox: ZE2400 - ZE2410, XXL Box...for Energica: ZS203, ZS204, ZS205, ZS204Afor Ergoeasy: ZTI7610, ZTI7615, ZTI7625, ZTI7630, ZTI7645, ZTI7647, ZTI7650, ZTI7665, ZTI7667, ZTI7671for ErgoSpace: ZE2400, ZE2410, ZE2243, ZE2244, ZEG300Colour:As shownMaterial:plasticPackage Contents:4 * HEPA FilterOnly the above package content, other products are not included.Note: Light shooting 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.