Congrats on your new tool, I love my mini chimney. It fits down inside my UDS without issue. If you use newspaper to lite the mini, make sure you pour a little cooking oil on the paper. If not, it's a bit difficult to keep it lit.
22.5 (B, DA, DA, H, M), 18.5 (AU), Jumbo Joe (AT), Smokey Joe (N), NBBD, UDS, Purple Thermopop.