Code point
U+2543
Glyph appearance depends on your fonts.
U+2543
SoU+2543 BOX DRAWINGS LEFT UP HEAVY AND RIGHT DOWN LIGHT 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+2543
9539
╃
╃
E2 95 83
2543
00002543
%E2%95%83
\u2543
\u2543
\u2543
\2543