1)About Inline Water Filter Cartridge: Post Carbon Filter is designed to connect with the tubes directly. It is very convenient for installation and replacement frequently. It can be with various filter media, such as PP sediment filter cartridge, granular activated carbon, carbon block filter cartridges, resin, ceramic balls,minerals to meet different needs. General Post Carbon Filter is 10"X2" and 10"X2.5",screwed or quick connected. CAN2514 is 10"X2.5", can be opened. Use candle type water filter cartridges such as Candle PP Melt Blown filter and Candle CTO Carbon Block filter, also can contain granular filter media. 2)About YUNDA FILTER CO.: 3)Pictures of the other Inline Filter Cartridge: