All ATX/PS2 power supplies are 150mm wide and 86mm high. However, they can vary in depth, but the standard would be 140mm - I installed such in this case and they still had enough air up to the HDD cage. I think up to 160mm shouldn't be a problem here, but to be sure it would probably be better to contact LC Power themselves.
PS: Before making a purchase, be sure to read the reviews (regarding the airflow).

I haven't found any more precise information online. But in all the years I have been assembling PCs for customers, I have never experienced a power supply unit not fitting.