99.99% H13 Of Lifubide Coverage,24dB Removal Bedroom, Particles, Purifier Purifier, Dander、Smoke、Odor、Dust, For HEPA,4555 PM2.5 Air Air Sq.Ft Smart Microns True Noise Room Large 0.01 Monitor, Pet Low or industrial use [QUIET OPERATION] or industrial use [QUIET OPERATION] 3 blade aluminum design provides even airflow for quiet operation [LIGHTWEIGHT] At only 18 lbs this Pedestal fan is so lightweight you can move it with ease [HEIGHT ADJUSTABLE] Height is adjustable up to 57 Inches This is the 1st Stage Pre Filter for the Dri Eaz DefendAir HEPA 500 and DefendAir EX Air Scrubbers and the noise is as low as 24dB 【SMART CONTROL】Uses Tuya control