FTB003 – Electrak 1 First Stage Filter

Electrak 1 First Stage Filter. The Electrak 1 First Stage Filter, or Cube Filter, is designed to catch large debris in air stream that flows through your Electrak 1 HEPA Vacuum. Large items can be removed from this filter, and the filter should be changed every 2-3 jobs or as necessary. Good First Stage Filter maintenance protects second stage filters.