Marineland's Rite-Size U Bonded Foam Filter Sleeve is specially designed to prolong the life of filter media by reducing the accumulation of waste and dirt particles which can prematurely clog a filter. Fine mesh foam traps and holds dirt particles while the sleeve's open-cell construction promotes water flow without impairing overall filter performance.

• Prolongs filter media life
• Traps small dirt particles
• Prevents premature clogging
• Reusable after rinsing
• Use with Marineland H.O.T. Magnum Media Container - (HOT Magnum 250 and HOT Magnum 250 Pro Filters)