New EK-DBAY Spin Reservoir (R3.0) is an updated reservoir of the Dual Bay Res Spin family. It features white flow indicator which shows the liquid is actually circling in the system. Liquid is flowing through the impeller on to the waterfall on the front acrylic cover into the reservoir. The reservoir is made of quality POM Acetal material with fresh looking, acrylic top. Front of the reservoir is aesthetically improved with quality brushed black anodized aluminum bezel. Both sides of the unit feature rubber anti-vibration mounting nuts. On top of the reservoir is one G3/8" threaded port with enclosed corresponding plug to easily fill the reservoir with cooling liquid. Backside of the unit features four G1/4" threaded ports. One is indicated as an inlet port, while other three can be used as outlet ports. Two G1/4" plugs are enclosed to close the remaining open ports after you determine the tube positioning. No water can evaporate from it which makes the annoying refilling unnecessary. The reservoir can be installed into an empty dual 5.25" drive bay slot. No boring or sawing is necessary.