General description The vhbw 4x 4-in-1 Filter Replacement for Boneco 46917 is a high-quality, precision-designed exchange filter for your air purifier. This 4-in-1 filter offers particle filtration, odour reduction, and features anti-allergenic and anti-microbial impregnation, making it ideal for allergy sufferers. It effectively captures dust, pollen, allergens, microbes, and harmful gases. Technical specifications Dimensions (L x W x H): 25 x 25 x 3.5 cm Weight: approx. 204 g Material: activated carbon / polyphenol Colour: grey / green with black frame Replacement cycle: approx. every 12 months Usage The built-in particle filter layer reduces virtually all coarse and micro particles. The activated carbon layer extracts unwanted odours and harmful gases such as ozone, nitrogen oxides, or sulphur dioxide. The biofunctional coating with natural polyphenol inactivates free allergens. The additional antimicrobial coating reduces the proliferation of viruses, bacteria, and mould on the