HEPA Service box contains 8 Ultra-filtration vacuum bags, 1 HEPA filter, and 1 micro exhaust filt...
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$65.99 at VacuumsInc
SEBO 5827A HEPA Service Box: Extra 8 Bags, 8 Dust Discs and 2 HEPA Micro Exhaust Filters for X1, ...
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$59.99 at EZVacuum.com