Pre-Filter for Arm-Evac 105, 200 and 250 Fume Extractors
The Pre-Filter is a lower efficiency (90% arrestance, EU 4) particle filter that is used to protect the primary filter from large particles, extending the life of the primary filter. Comes in packages of 5. Compatible with the following newer Combo Filters used on the Arm-Evac 105, Arm-Evac 200 and Arm-Evac 250 Fume Extraction units: