IceCap 2.5 Liter HOB Waste CollectorEliminate smelly skimmate build-ups and prevent skimmer overflows with this 3-in-one device. It collects large amounts of skimmate, controls strong odors, and incorporates a fail-safe mechanism to stop overflowing skimmers. The vented carbon housing can be swiftly removed for easy carbon exchanges.2.5 Liter Hang-on-Back Waste CollectorItem #:IC-WCTHOBMax Mounting Width:1.5inHolding Capacity:2500mLFootprint:6.7 x 6.7inHeight:13inIntake Size:3/8inFeaturesDurablePrevents Skimmer OverflowsOverflow Safety SwitchRemovable Carbon Filter CupInsurance from Murphy’s LawGreat For External Skimmers and Testing Machines