General description The vhbw 2x 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 effectively captures dust, pollen, allergens, microbes, and harmful gases, making it ideal for allergy sufferers. It features particle filtration, odour reduction, and anti-allergenic and anti-microbial impregnation, significantly reducing the spread of microorganisms on the filter. 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 Replace the filter every 12 months, depending on frequency of use. Other information The filter includes a built-in particle filter layer that 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