I was just using scan as my base didn't spot you'd used ebuyer
And that opens up the H17 https://www.ebuyer.com/825833-therma...-1j1-00s1nn-01 it's the same larger internals as the H18 but no window and a more solid front bezel.
granted high air will be restricted, however without a high end cpu + overclocking + graphics card high air flow is not required and the increased internal space over the H15 should make cabling easier.