Specification Brand : Colorfullife BulletPoint1 : Designed for Blue Pure 411, 411+, 411 Auto and Mini Air Purifier BulletPoint2 : These Filters were made by H13 material. BulletPoint3 : Recommend to change filter once every 6 months, or dependent on usage. BulletPoint4 : Package in 2 Pack Filters BulletPoint5 : If you have any problems with the filter fitting your air purifier, please contact us. BulletPoint6 : WHY BUY CARBON 4 PACKS: All GermGuardian filters come with a HEPA Filter and carbon layer. By regularly replacing the carbon layer, your air purifier will continue to deliver the highest standard of air quality day in and day out. For optimal performance, we recommend replacing the activated carbon filter layer every 2-3 months depending on your indoor environment. This ensures that you maximize the effectiveness of your HEPA Air Purifier and enjoy clean air day after day. BulletPoint7 : PURER PARTS, PURER AIR: Genuine Germ Guardian replacement filters offer certified fit and maximum filtration. Off-brand filters often fail HEPA testing standards, fit incorrectly, reduce efficacy, and may cause damage to the air purifier. BulletPoint8 : COMPATIBLE WITH: Germ Guardian Air Purifier Models AC5000E, AC5300B, AC5350W, AC5350B, CDAP5500; PureGuardian AP2800CA, Black+Decker Model BXAP250 Color : Black Color1 : Black Color2 : White CompatibleDevices : Air Purifier CompatibleDevices1 : Winix WAC6300 CompatibleDevices2 : Winix FresHome Model P300 CompatibleDevices3 : Winix WAC5500 CompatibleDevices4 : Winix 5000B CompatibleDevices5 : Winix PlasmaWave 5300 ControlMethod : touch CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier1 : 682838274503 ExternallyAssignedProductIdentifier2 : 0682838274503 ExternallyAssignedProductIdentifier3 : 00817624010885 ExternallyAssignedProductIdentifier4 : 6160221196808 ExternallyAssignedProductIdentifier5 : 7909387652600 ExternallyAssignedProductIdentifier6 : 0092926100001 ExternallyAssignedProductIdentifier7 : 00092926100001 GpsrSafetyAttestation : 1 IncludedComponents : Air Filter IncludedComponents1 : 4 Disposable Activated Carbon Pre-Filters IncludedComponents2 : HEPA Filter ItemDisplayDimensions_Height : 2.37 inches ItemDisplayDimensions_Width : 12.87 inches ItemDisplayWeight : 0.19 pounds ItemName : Blue Pure 411 Replacement Filters for Blueair Blue Pure 411, 411+, 411 Auto and Mini Air Purifier, Include 2 Particle and 2 Activated Carbon ItemPackageDimensions_Height : 30.4038 centimeters ItemPackageDimensions_Length : 8.7884 centimeters ItemPackageDimensions_Width : 29.3116 centimeters ItemPackageQuantity : 2 ItemTypeKeyword : air-purifier-replacement-filters Manufacturer : Colorfullife Material : Carbon Fiber Material1 : HEPA Material2 : Activated Charcoal MinimumEfficiencyReportingValue : 17 ModelName : GermGuardian FLT28CB4 Genuine Carbon Filter Replacements ModelNumber : Blue Pure 411 NumberOfItems : 1 OemEquivalentPartNumber : 115115 PackageLevel : unit PartNumber : FLT28CB4 Pattern : Filter ProductDescription : Colorfullife 411 Replacement Filter for Blue Pure 411 Air Purifier, Include Particle and Activated Carbon ProductGrade : Lightly Used ProductSiteLaunchDate : 2019-09-08T07:00:00.000Z RegulatoryComplianceCertification : SCS-CARB-00015 RequiredProductComplianceCertificate : 不适用 Size : 7.8" x 7.8" x 11.5" StreetDate : 2015-11-19T00:00:01Z Style : 2 pack 411 Auto & 411 & 411+ Filter SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 2 UnspscCode : 40161505 WarrantyDescription : Manufacturer's defects and workmanship warranty for 180 days. WebsiteShippingWeight : 0.5725 kilograms