GH1638 is a heavy duty mesh that is very difficult to penetrate. This makes it ideal for security paneling and security fencing. It has a very tight weave with a small percentage open area.
The LWM (Long way mesh) is across the sheet while the SWL (Short way length) is along the length of the sheet. Thickness is the thickness of the sheet being used to cut the mesh from. The strand is the width of each slice.
For more specific detail about Gridmesh including loading specifications please follow this link to Gridmesh Technical.