This chamber base comes in two basic options - either three or five inlets. On the three inlet option you can also choose between having the two side branches set either at 45 degrees or at 90 degrees to the main channel. On the five inlet option, two of the inlets are at 45 degrees and two are set at 90 degrees to the main channel.Every inlet and the outlet features an adjustable ring seal socket that can be adjusted by 10 degrees in any direction. This is particularly useful when the connecting pipes are not perfectly aligned, often saving the cost of an additional bend.These bases should be used in conjunction with our D820 and D822 side risers.Our adjustable bases are all manufactured by FloPlast.