Refillable Cartridge 2.5" x 20" White Bottom Open

These empty refillable canisters can be refilled again and again with most type of filter media. The canister have polypropylene pads at each end that provide sediment filtration and to prevent media from being released by the cartridge. 
 
Specifications:
Empty Refillable Cannister
Use with carbon, resin, and other media
Sediment Removal Pads at each end