Photo 1 is the bottom mechanism attached to an aluminum square bar imprinted with 26B , BSI VL. The bar measures 1/2 in by 1/2 inch.
The bottom plastic mechanism measures 1 1/2 inches wide x 2 inches long x 1/2 inches deep.
The second photo is the top of the aluminum 26 inch bar showing that it has ?wood? inside with double nylon string coming through to attach to a 1 inch long by 1/4 inch wide flattened hook that inserts into a hole in the top of the plastic channel.
Photo 3 is a picture of the bottom mechanism attached to the metal channel. I need all of these parts for each side of the bottom sash of a tilt vinyl window, no brand on the window. Window is 5 ft tall