Code point
U+2ACE
Glyph appearance depends on your fonts.
U+2ACE
SmU+2ACE SQUARE RIGHT OPEN BOX OPERATOR is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Supplemental Mathematical Operators block.
Choose the representation you need, then copy its value.
U+2ACE
10958
⫎
⫎
E2 AB 8E
2ACE
00002ACE
%E2%AB%8E
\u2ACE
\u2ACE
\u2ACE
\2ACE