These drawers are amazing! We ordered two different sizes for two kitchen cabinets. Both fit perfectly. Very well made and robust! Our drawers came assembled, so there was no assembly required. We just had to screw the whole thing to the base of the cabinet. But we took a shot and just placed the drawer, and didn’t use the screws. After we loaded the drawers, they were sturdy enough to balance themself, but be careful to open only one drawer at a time then )