I recently ordered some shallow foundationless "F" frames from Kelley and they came in last week. I've assembled maybe 50 or so of them.
The frames are well-made though the wood is quite soft. That would make it easier to insert eyelets, if you do that. (I don't wire my shallows, so that point is moot for me in this case.)
These frames are a bit short (length-wise) for my Mann Lake boxes. I had heard Kelley uses different dimensions for their woodenware especially in the way beespace is calculated. Inside length is apparently different, as well. I hope there will not be excessive burr comb on the end bars.
New beeks take note: There is NOTHING wrong with the way Kelley calculates beespace - it is simply different from the manufacturers I normally buy from (Miller Bee Supply and MannLake). You will want to avoid mixing woodenware of different manufacturers unless you know they are compatible. I knew this applied to the boxes, but now know the frames make a difference, as well.
I don't know that I will assemble any more of these unless I just need them for this season. I may sell them or trade them off to other local beeks who use Kelley boxes and go back to using the MannLake frames even though I will have to remove the wedge and turn it sideways and deal with the grooved bottom bar.