Antimicrobial 3-layer pack filter, for PKV type cleaners, 6 sheets. - Brand: HITACHI - Model: GP-S120FS - Filter Type: Antimicrobial 3-layer pack filter - Quantity: 6 sheets - Application: For PKV type cleaners - Features: With suction port seal Thank you for viewing. I have opened it, but it is unused. I confirmed that there are 6 sheets. There are traces of sticker removal on the package. I will send it in this package in an envelope. No price reduction.