Code point
U+2558
Glyph appearance depends on your fonts.
U+2558
SoU+2558 BOX DRAWINGS UP SINGLE AND RIGHT DOUBLE is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Box Drawing block.
Choose the representation you need, then copy its value.
U+2558
9560
╘
╘
╘
E2 95 98
2558
00002558
%E2%95%98
\u2558
\u2558
\u2558
\2558