Question about Map Sizes

I was browsing through the map files, and I think a couple of them are wider than the maximums (600 and 800), which I thought were very strict.
This newer map for instance:
8 Thoughts
<smallwidth>675</smallwidth>
<smallheight>535</smallheight>
<largewidth>820</largewidth>
<largeheight>650</largeheight>
Is that allowed then?
This newer map for instance:
8 Thoughts
<smallwidth>675</smallwidth>
<smallheight>535</smallheight>
<largewidth>820</largewidth>
<largeheight>650</largeheight>
Is that allowed then?