The new design Eheim Professional 4+ 250 is a high performance and energy efficient external filter. - Large pre-filter for easy intermdiate cleaning and extra long intervals between cleaning. - Integrated automatic self priming for quick filling of the canister. - Safety hose adapters with easy to use locking mechanism the adapter can only be opened when the hose taps are closed. - Individually fillable filter baskets complete with original Eheim filter media. - Handling features: recessed handles transport castors 4 sturdy clips multifunction adapter. - Adjustable pump output. - Includes 2 x suction hoses 1 x spray bar outlet pipe Eheim hose and set-up accessories. - 3 Year Manufacturers Guarantee. Technical Info... - For aquariums 120-250l. - Pump output approx. 950l/h. - Delivery head approx. 1.5m max. - Power consumption 12w. - Canister volume 6.1l. - Filter volume 3.0l + 0.5l (prefilter). - Hose diameter suction side 16/22mm pressure side 16/22mm. - 358mm H x 238mm W x 244mm D.