Window channels

[terry_208]

Thanks for the correcting my comment!  I was referring to the comment about the OP being the bottom piece w/o the fuzzies. I was reading it as the bottom rail.  My bottom piece that holds the lower end of the run channel is curved like # 21550 above. 

I don't remember a piece like the one shown in the op in my doors.  Could it be from somewhere else?