● Uses a special electrostatic filter consisting of 3 layers of pre main backup.
Comes with an adjustable clip to adjust the length of the rubber.
Model Number: X-3502
Main Filter Material: Special electrostatic non-woven fabric
Quantity: 1 box (20 sheets)
Usage limit: 12 hours
Particle collection efficiency: more than 97.0% (average 99.4%)
Intake Resistance: Less than 38 Pa (average 27 Pa)
Weight: Less than 0.5 oz (15 g)
National Certification Passed Number: TM593.
Classification: DS2