匰 is a traditional Chinese hanzi, listed here under the keyword “utensils used anciently in ancestral temples”. It is built from 匚 (box) and 單 (single).
On KumiJi Glyph Explorer, open the parts search and type “box” + “single”. 匰 is among the results, together with every other character containing the same shapes.
Open 匰 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.