Jim
It's an MRC MR4R
There are three fitting between the Becketts. At the top is the skimmer pump discharge to the Becketts. Between the Becketts on top of the box is the feed pump inlet. Feed the skimmer here with 1.5x your system volume. the fitting below that on the face of the box is the feed to the skimmer pump. The yellow skimmer pump is a PanWorld PX200 (if I remember correctly) There is a video in my old thread of the skimmer running
It's an MRC MR4R
There are three fitting between the Becketts. At the top is the skimmer pump discharge to the Becketts. Between the Becketts on top of the box is the feed pump inlet. Feed the skimmer here with 1.5x your system volume. the fitting below that on the face of the box is the feed to the skimmer pump. The yellow skimmer pump is a PanWorld PX200 (if I remember correctly) There is a video in my old thread of the skimmer running