... of stair treads:5. Recommended width of stair treads:Remarks: bearing bar width is 5mm. As to 3mm in width, all the values in ... .6. End plate of stair tread7.Tolerance of steel gratingNotes for ordering:1. Please clearly state specifications, types, quantity and ... the case of stair treads, please specify its type, length, width, quantity and surface treatment. 4. If any enquiries, please contact ...