1960´s
• Textile threads drenched in cold adhesive used to separate filter
media
• Limited pleat height and spacing
1960´s
• Textile threads drenched in cold adhesive used to separate filter
media
• Limited pleat height and spacing
1950`s
• Corrugated aluminum foil
used to separate filter media
Middle 1970´s
• Dimples created during media production used to separate filter media
Late 1970's
• Hot melt threads used to separate filter media
• Pleat height and spacing remain limited
1988 - Generation I
• Pleat spacing limited by embossing characteristics of the glass fiber
filter media
1997 - Generation II
• Wider pleat spacings achieved by additional hot melt threads applied
to the dimples
• Only glass fiber filter media
2001 - Generation III
• Patented proprietary dimple geometry, together with new synthetic
and glass fiber filter media, enables even wider pleat spacing with unsurpassed
mechanical filter strength
• Passes UL 900 test standard
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