Code point
U+251F
Glyph appearance depends on your fonts.
U+251F
SoU+251F BOX DRAWINGS DOWN HEAVY AND RIGHT UP 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+251F
9503
┟
┟
E2 94 9F
251F
0000251F
%E2%94%9F
\u251F
\u251F
\u251F
\251F