... size 4. 1X5.85m Galvanized floor steel grating,flooring grating,trench grating,stair treadSpecificationsAdvantages of steel grid plank: light weight, strong intensity ... 100mm; of which 50 and 100mm arerecommended3) Advantages of steel grid planks: light weight, strong intensity, big load ... customers, or depends on the wrapping Galvanized floor steel grating,flooring grating,trench grating,stair tread