A sheet of 3mm thick silver mirror acrylic perspex size is 210mm x 297mm, which is a4 paper size. These sheets are supplied with the protective coating on which needs to be peeled back to reveal the mirror sheet where the reflection is as good as glass mirror. Ideal as a replacement for regular glass mirror as this material is 10 times stronger than glass and if broken does not leave loads of dangerous glass pieces. We also supply coloured and clear acrylic along with polycarbonate, PETG and foam PVC. For advice on any of our products please contact us through Ebay communication centre. Manufactured using 3mm thick clear acrylic. 10 times stronger than glass. Ideal as a replacement for regular glass mirror.