The Mir-Mel door is our strongest and most durable door ever. This door was developed for the hotel industry which would continuously damage mirror doors as they vacuumed the rooms or banged luggage against the edges. Our mirror door is 3/4 in. MDF (Medium Density Fiberboard) with a 3mm mirror laminated directly to the surface, creating a nearly unbreakable mirror panel. Compared to our competition who manufactures doors that are simply mirror in a lightweight frame. These lighter doors have two main problems; the mirror without a backing can become wavy, distorting the image and secondly, the mirror is also much more easily broken.