Code point
U+2521
Glyph appearance depends on your fonts.
U+2521
SoU+2521 BOX DRAWINGS DOWN LIGHT AND RIGHT UP HEAVY 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+2521
9505
┡
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E2 94 A1
2521
00002521
%E2%94%A1
\u2521
\u2521
\u2521
\2521