GasSizeaf HEPA Filter Replacement for Honeywell HPA300, 3 HEPA Replacement Filters R + 6 Carbon Pre-Filters A , for Honeywell HPA300VP, HPA304, HPA5300, HPA835 Sizeeries

True HEPA Filter:Captures up to 99.97% of 0.3 micron airborne substance. Room Area Served:465 sq.ft Dimensions:Ivory HEPA Filters R: 10.2*6.5*1.6 inches.  Black Precut Activated Carbon Pre-Filters: 17.2*14.2*0.17 inches.