Fit Model: Compatible for Puppy D531 D-532 D-535 robot vacuum cleaner. The Hepa filters help to trap particles down to Micrometres, leave no dust, return you to a clean home. Easy to Install: Easy to take out and snap into place in daily maintenance. Free your hands from complicated replacement procedures without any installation tools. Daily Maintenance: Please replace the filters and side brushes every 3-6 months. Colour:As shown Material:plastic Package Contents: 5 * HEPA Filter 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.