... pressure drop, high dust holding capacity, long working lifeType: SP-600G/F5 is backed with net scrim, with full glue.JE ... is backed with cloth cover, with full glue.3A-600G/F5 is backed with fire-retardant net scrim, with full ... glue or surface glue.PE-600G/F5 is backed with fire-retardant net scrim, with full ...