It is convenient to exchange and deal with, It has good
permeability of air.

Large size filter for its small surface, so the quantity of the
process us great, cost low for facitity and management,
has excellent performance as filter dust, and is able to make
speed of current and wind passage. All the performance sizes
produced are dependant upon ASHTABSTD 53-76.

Used as final filter for HEPA filter for all processing and general co-systems.