Expanded metal: Raised Mesh SWD: Plus 1/4" minus 0" per foot of width LWD: Plus 3/4 minus 0" Flattened Mesh SWD: Plus 1/4" minus 0" per foot of width LWD: Plus 3/4" minus 0" Grating SWD: Plus 1/4" minus 0" per foot of width Camber Measured by placing a straight edge along the concave side of the sheet parallel to the LWD, touching both ends. The maximum distance from the edge expanded metal to the straight edge is the camber Raised Mesh 1/16" per foot of length Flattened Mesh 3/32" per foot of length Out of Square Expanded metal sheets are not perfectly square as manufactured. Stock size sheets and machine run non standard size sheets will be produced to the following tolerances SWD: 1/16" per foot of Width LWD: 1/16" per foot of Length Sheets that have to be perfectly square must go through a secondary process of shearing. Flattening Flattened sheet thickness shall be plus or minus 10% of published thickness or strand thickness Non standard sheets Machine run