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