Based on this product's specifications, here are some alternatives and similar models
Container for filter cartridges for sera Fil 250 / Fil 250 + UV / Fil 400 + UV + Xtreme Filter
Summary description:
Replacement container designed to hold filter cartridges compatible with sera Fil 250, Fil 250 + UV, Fil 400 + UV and Xtreme Filter models. Provides a housed compartment for mechanical and chemical filter media cartridges to be placed inside canister systems or filter units. Intended for aquarium maintenance and water filtration, facilitating cartridge changes and media organization for freshwater and marine setups.