As long as the radiator is 25mm thick or less, it should fit
Trouble is that the LT240 has been discontinued now - replaced by the NexXxos ST30 from what I can tell - can't find anyone still selling the radiator so I'll have to just try my luck and use double slim fans - if it doesn't fit then I'll just have to sell it and go for the Corsair SF600The 20.5mm XSPC TX240 doesn’t fit though because it is too wide.
The LT240 is the only 240mm that fits as far as I know.