OMG it is perfect! I've been looking for a metal file rail replacement for my six wooden file cabinets. The ones that came with the cabinets are too weak. They kept buckling and all my files would fall to the side. Then I lost one rail in a move. Finally, I found these rails. The width fit perfectly in the slot on the cabinet and the rail is much stronger than the original ones. Overall I'm extremely satisfied. Received quicker than expected. Great find and great company. Thanks!