Telescope bags fill and drain up to 3 times faster than a traditional ballast Drop the pump in, set it and forget it. This telescoping system allows you to use a pump that is up to 3 times faster than any conventional plug & play setup. HIGH FLOW FILL PORT + Spring loaded quick connect male adaptor + 1 1/2” diameter fill port + Check valve water gate with watertight rubber cap + Compatible with Eight.3 3000GPH or 3700GPH pumps DRYBAG ROLL TOP CLOSURE + Drybag roll top closure + Easy drop in pump chamber + Fits all Eight.3 high power pumps + Easy clasp buckle closure TELESCOPE COVER + Covers dry bag chamber when not in use SUBMERSIBLE PUMP + Two submersible 12 volt pumps + 3700GPH 20AMP power adaptor (suggested for use on 2010 boats and newer) + 3000GPH 12AMP power adaptor (suggested use on 2009 boats and older) + 12ft long water hose to fill and drain + 1.5” diameter hose + 15ft long 12V power adaptor with on/off toggle switch ANTI-ROLL DESIGN + Trapezoid anti-roll shape VENT PORT + Two sided vent slots allowing extra air to escape while filling DRAIN PORT + 1” NPT drain port HEAVY DUTY SHELL + Crafted using reinforced durable materials + High strength welded seams Size(LBS) Dimensions(L" x W" x H") Size(KG) Dimensions(CM) 400 41 x 18 x 14.5 182 104 x 46 x 37 800 50 x 24 x 18 364 127 x 61 x 46 1100 50 x 27 x 22 500 127 x 69 x 56