【Compatible with Bluepure 411/411+/3210】 This is a set of 2 compatible filters (dust collection + deodorization integrated). ✅ Effectively captures pollen, dust, PM2.5, and pet hair ✅ Contains activated carbon to reduce household odors, aging odors, and cooking smells ✅ Size: 48 x 203 x 282mm Easy to install with a fit equivalent to the original filter. Comes in a set of 2, convenient for the next replacement. Brand new, unused. Recommended for those who want to maintain clean air through regular replacement.