Maximum Load Capacity: 376.6 lbs (180 kg); The heavy drawer slide rail uses steel plate with a thickness of 0.1 inch (2.5 mm), and the sliding rail is 0.7 inch (19.2 mm), so it will not deform even when used with heavy loads. Width 3.0 inches (76 mm) and length 39.4 inches (1,000 mm) with a maximum load capacity of 396.6 lbs ((Mounting brackets and M6 screws are not included)