Equate 1.1 Gallon 250 Sq ft Invisible Cool Mist Humidifier, White & Blue NIB Product details. Say goodbye to dry air and hello to your new Equate 1.1 Gallon 250 sq ft Invisible Cool Mist Humidifier. New in the box, the box was opened to ensure the unit & all the parts are working. 1.1-gallon tank shows water level High and low settings Easy grip handle and large tank opening for easy filling and carrying Wicking filter included Invisible cool mist Runtime up to 24 hours Up to 250 sq ft room size Filtered moisture Find replacement filters, just search 'Equate Humidifier Filter Replacement',  'PCWF813' or 'RWF813'