Intex S1 Genuine Cartridge Filter (2 pack).

Pack of 2 genuine Intex cartridge filters for use with Intex Purespa Hot Tubs and others

Designed to help your Spa clean and safe from contaminants, this twin pack of Intex 

Filter Cartridges are easy to install and even easier to maintain. Simply attach to the inside of your hot tub, and it will filter out grime and bacteria that builds up while you're not using it.
Specification

Pack Size: 2
Height: 22cm
Diameter: 11cm
Weight: 500g