Compatible Models: Our 4000 Filter Replacement Is Compatible With Filter Queen Defender 4000 7500 360 Air Cleaner Purifier, Please Check Your Air Cleaner Purifier Carefully To Make Sure It Is The Correct Filter | | High-Efficiency Hepa Filter: Adopting True Hepa Filter Remove 99.97% Of Airborne Dusts Pm2.5 Down To 0.3 Microns In Size. Remove Large And Airborne Particles, Including Dust, Common Particles, Etc | | Filter Large Particles Unpleasant Odors: Pre-Filter And Carbon Filter Can Effectively Remove Large Particles In The Air As Well As Some Odors, Such As Pet Odor, Smoke, Etc, Which Can Effectively Protect The Carbon Layer And Hepa And Extend Its Service Life | | Package Included: 1 X True Hepa Filter And 4 X Activated Carbon Pre-Filter Include. Which Help Save Money For You. It Is Recommended To Replace Every 6-8 Months (Dependent On Air Quality And Use) So You Can Enjoy Clean And Filtered Air For A Long Time | | Purchase Hassle-Free: We Strictly Control The Pur.