GM575 mesh has a raised surface finish. GM575 has the similar weave to GM450 but has a slightly wider pitch and a 20% heavier strand. GM575 is our heavy grade mesh suitable for high load areas and areas with less support options.
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.