Thank you for viewing this product. Price reduced. If anyone is looking for this, please consider purchasing. This is a genuine product. (Compatible with Panasonic and National) I am selling this because I accidentally purchased the wrong model number. Purchase date: November 30, 2025 Although it is unused and new, it has been opened once, so I have listed it as "Like New". The number of days until shipment is 2-3 days due to work on weekdays. Thank you for your understanding. ○ Instant purchase available 【High-Performance Water Purification】 This replacement cartridge is compatible with Panasonic water purifiers and exhibits high water purification performance. It improves water quality and provides safe drinking water. 【Compatible Models】 Compatible with specific models such as C91SKS1A, C91SKS2A, and C92SKS1A, and is easy to replace. 【Durability and Materials】 Made of ABS resin, it is highly durable and can be used for a long time. - Brand: Panasonic - Model Number: 91SK1P - Type: Replacement Cartridge - Compatible Models: C91SKS1A, C91SKS2A, C92SKS1A - Material: ABS resin - Size: Diameter 7.5cm, Height 22.5cm