This rail hanger snap pin is for Hunter Douglas Vertiglide Applause and Duette vertical cellular shades manufactured before May 2015.
It attaches the moving rail bracket wheel assembly to the moving rail and the stationary rail bracket to the stationary rail.
Also used in Ovation Cellular Sliders by Comfortex and Vertical Application Honeycomb Shades by Alta.
White plastic.
Sold individually.
Hunter Douglas part # 2990919000 & 2980114000.