Ok I looked inside and the cores are split, there is a divide half way between the inlet and the outlet so the air will have to pass all the way through and back. Here are the specs
The THS Type 14 Intercooler is a large sized intercooler that has the inlet and outlet situated at the same end. This makes it easier to fit to cars that may have a standard side mount intercooler. It has a core size of 600x300x76mm.
Specifications
Volume 13680cm2
Core size = 600 x 300 x 76 mm
Inlet/Outlet diameter = 76mm (approx 3")
Core construction = Plate and Bar
Length between Inlet/Outlet and opposite tank = 790mm
Distance between inlet outlet pipes = 74mm
Tested to 5 Bar
Cast aluminium end tanks
Suitable for applications up to 650bhp