This page contains shower track image files in the png format. The number attached to each file
indicates the line width: 1 minimum thickness, 2 double and 3 tripple.
'large' is for files with about 1550 dots(w) x 2000 dots(h) while 'small' for about half of 'large'.
U means the upper half of 'large' file and 'L' for lower half. (They overlap a little bit).
The image background is transparent.