I just got a Ultitube D5 Next 150 w/ Leakshield which came with an L-Bracket #34111 and a flat bracket #34150. I figured out how to attach the L-bracket to the underside of the pump housing and the rear of the Ultitube base (despite the complete lack of instructions). I cannot figure out what the flat bracket is for. The hole pattern matches the side of the L-bracket that goes under the pump. Is the flat bracket supposed to attach to the L-bracket? I could not find any instructions for either of these brackets. I figured out the L-bracket from photos and a Youtube video of someone who was more confused that I was. I have not been able to find any info on what the flat bracket is for, and how it mounts, and to what. Sorry if this is a dumb question but this bracket has me flummoxed.

Thank you. Mystery solved. I now see that is the third picture from the product page. I don't know how I missed that.