Proven technology, balanced performance and high efficiency are the hallmarks of the Eheim Classic filters. •Silicone sealing ring for easy and safe locking after cleaning. •Sealing ring fixed to the pump head •Alternative filling of filter media either with filter sponges or with combined media •2 years warranty •Powered by new high output 1262 pump •Includes two quick-release double tap valves •Filter Volume: 4.8 gal •Pump Output: 900 gph •Weight: 20 lbs •Flexible Hose Diameter: 1" inlet and 5/8" outlet