Washable textile prefilter The textile pre-filter of Roger Little air purifiers complements its design and removes larger dust particles from the air. This protects the Dual Filter™ and extends its life. Sanitized® antimicrobial protection The unique Swiss Sanitized® technology ensures antimicrobial hygienic protection of materials and textiles. Its properties prevent the multiplication of bacteria and microbes in the textile part of the prefilter. Just throw it in the washing machine The pre-filter can be washed in the washing machine at 30°C in the delicate wash mode. We guarantee antimicrobial protection for at least 20 washes. We recommend the regular user to wash the pre-filter every 3 months, those suffering from allergies should increase the intensity to 1x per month. Technical data: Lifetime of 20 washes Dimensions 350 x 420 x 5 mm Weight 0.028 kg Suitable for: new Roger Little series Try other products from the Stadler Form brand, which you can find in the Air Purifiers and Electrical categories. You can now buy the product with a 0% discount. If you are not sure that you have chosen this product, get inspired in the Air Purifiers category.