Winix - Model A231 - 4-Stage True HEPA Air Purifier - Manual

360° All-in-One 4-Stage True HEPA Air Purifier with PlasmaWave Technology. AHAM Verifide at 230 sq ft. : Also cleans rooms up to 1,110 sq ft in 1 hour (555 sq ft in 30 minutes, 370 sq ft in 20 minutes, 278 sq ft in 15 minutes).