Solid door with good construction. When mounting the top rail to a sheetrock wall, I had to reinforce the wall with some pieces of plywood against the back side of the sheetrock. The door is extremely heavy and for my application, the plastic sheetrock anchors were not strong enough. The mount holes in the top rail are not on 16 inch centers. The required skill level for installation can be above average if you run into problems. My installation came out beautiful, but I really had to do some extra work to support the weight of the door.