Sorry this is amess since the wiring is now burried behind a cabinet and who wants to sit under the minii split and what are you planning to display on those too many shelves . To me this is aperfect spot for TV and storage cabinet underneath so provide a bit more info as to where this is in the house . I really do not understand why all that stuff on the right was done that way and not from outside.

ha yes I understand the confusion. I live in the middle of a group of rowhomes where the second floor is hard to get to from the outside so the lineset had to go thru the main level. I could have framed it in, but I chose to do this instead. This is the dining room. I will be connecting the shelves with a bench, and there will be doors on the shelves making much more sense than just weird open shelves.

You could use either a small cove mold or just a piece of flat stock like a 1x3.

Are you planning to put doors on the cabinets? What style of door?

the doors are slab, and cover the two largest areas.

Here is a simple home made trim that I salvaged off of some old kitchen cabinets. Easy to make on a table saw. Something similar, perhaps wider would work nicely with slab doors. Or just the plain flat stock that I mentioned earlier.

My first thought is that those shelving units are WAY TOO DEEP! You can’t get to whatever gets shoved inside. What is that white contraption? Part of the A/C? Must it stay there? Cabinet units half that depth, or just deeper than the white box, would work better visually. Adjustable shelving would allow you to reach into the tall units to put things away or to take things out to use. The unit on the right can have a false back to hide the conduit bunch. I would have a buffet-type cabinet below and perhaps disguise the white box with some decorative wood or fabric-covered valance piece. The tall units might look good with doors.

Thank you for all your feedback! I know the dimensions look off. For skill and budget purposes, I used premade shelves as the foundation. The bottom goes all the way back, but the top does not. The white thing is the minisplit for my main level, and it not cannot be moved. Once the bench is in, the doors are on, and it’s painted it will make more sense. I have a pedestal dining table and will use the shelf space for much needed storage (which I don’t have much of in my small space). Again, thank you all for quick and critical feedback!

I like it with no trim.