Question Can I fit an ATX motherboard in my current case?

[ZvoneST]

Hello I currently have an older case which has the dimensions of 43cm(height), 17.5cm(width) and 40.5cm(lenght).
Currently I am using a micro ATX motherboard and I dont know if I can fit a ATX motherboard in it.
Also I dont know the manufacturer of the case I think its MS but I am not sure, it is an old case.

 

[maikutech]

A picture of your case would help us out much better.