Bullet Points: 1.Reliable long-lasting use: Made of high-quality PVC material, this filter cartridge holder is durable and sturdy. You can use it for a long time without worrying about damaging it. 2.Clear and healthy for the hot tub: By using this filter cartridge holder, you can prevent debris and dirt from clogging your filter and keep your water sparkling clean. 3.Secure and tight seal: Prevents water leakage and ensures optimal performance of your pool filtration system by providing a secure and tight seal between the filter housing and the pump unit. 4.Wide Compatibility: This filter cartridge holder is compatible with 54112, 54148, 54113, 54129, and 54144 models. It can be used to replace your old or damaged holder easily and quickly. 5.Easy to Install and Replace: This filter holder is designed to fit most inflatable hot tubs and swimming pools, allowing you to change the filter cartridge quickly and conveniently. Specification: Name: Filter Cartridge Holder Material: PVC Product size: (approx.) 12.5*14.5cm/4.92*5.71 inches Package List: Filter Cartridge Holder *1