Glass door spline

A home owner from Newburyport, MA says:
Sorry, no markings. Door has a glass operable side and a fixed pane in same unit. Probably about 20 years old, maybe Brosco millwork (the door).

Weatherstripping runs on both sides and top of door frame. It fits into a dado in the door frame, as shown in my crude drawing. The "cushion" or bulb may have been round originally, hard to tell. I have two samples laid on the paper, but it's same spline all way around. I'm not fussy about fit, so if you have something close I'm willing to buy and try.

User submitted photos of a shower door spline.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Thanks for posting. Could you possible use something like our 58-173 as a replacement? Check it out and see what you think.
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