Standard steel bar grating has the 1-3/16" and 15/16" bearing bar spacing. There is a type of steel bar grating, which has closer bearing bar spacing for heavy duty and special requirements applications, that is close mesh steel grating.

Compared with standard steel bar grating, close mesh steel bar grating has higher load capacity and can be used in more applications. The closer spacing can permit the wheeled equipment passing, including the baby carriage, roller skates. Additional, the close mesh steel grating is suitable for the ADA (American Disability Act) standard. It can allow the wheel chairs get through fluently.