Code point
U+29C9
Glyph appearance depends on your fonts.
U+29C9
SmU+29C9 TWO JOINED SQUARES is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Miscellaneous Mathematical Symbols-B block.
Choose the representation you need, then copy its value.
U+29C9
10697
⧉
⧉
⧉
E2 A7 89
29C9
000029C9
%E2%A7%89
\u29C9
\u29C9
\u29C9
\29C9