Reflectiv MIR500 The one-way mirror film plays on the balance of light. Reacting to the stronger light, the film becomes a reflective screen. It sends back on one side the image like a mirror, while retaining the transparency of glass on the other side. It allows you to see without being seen. Internal application. Thickness: 36 microns. ¹Maximum Service Life: 12-15 years. Service year life based off European, vertical conditions. For approx NZ year life refer to www.signsupplies.co.nz/yearlife