Perfect compatibility: pre-motor filter compatible Shark Detect Pro IW3611DE / IW3611EU / IW1611DE / IW1611EU/BU1120EU IW3511 IW1111 IW3120,IW1120 wireless vacuum cleaner. Please confirm the model number be compatiblee purchasing. High-quality material: the IW3611DE filters meet or exceed the original-quality, compatibility and service life and are rigorously tested. Made of high-strength material and environmental protection. These vacuum parts can be washable and reusable. Highly efficient filtration: made of high-strength materials, it can filter fine dust very well and keep your home clean and com compatibletable. This helps us breathe clean, fresh air and protect your family from allergens and other particles in the air while absorbing odors. Colour:As Shown Material:Plastic Package Contents: 4 * Filter 1 * Cleaning Brush 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.