Plexiglass mirror is a "reflective" sheet in general. Specifically, 2WAY mirror is a very specialized type of product. This is a partially metalized mirror sheet without an opaque backing so that under the correct lighting conditions you can see though the sheet (from a darker room to a lighter room). The mirrored surface is sensitive to humidity, sunlight, certain chemicals and may delaminate from those. Care must be taken to not chip the mirror surface or remask the material. Cleaning should be done with soap and water or a plastic polish that we sell. Use of Benzene, alcohols, lacquer thinners and such will attack the surface. This is an INDOOR ONLY product. For more clarification please call if you think your intended application may not work as intended.
Note: There are a lot of applications where acrylic mirror (Plexiglass mirror) works very well. It is NOT intended to replace the quality reflection of a glass mirror. That said, you should consider plexiglass mirror in applications where SAFETY is a major concern as plastic mirror is very difficult to break - and when it does, breaks into large pieces that can be handled with bare hands.Visual Defect Parameters (PDF)