Review on Chefman Compact Glasstop Warming Tray by Cristofer Cejudo

If I could give zero stars I would. Unfortunately I did not open the box during my return period, otherwise I would have sent it back immediately. The warning states to place only on a heat resistant surface and then gives examples. In my house there is not a single flat surface made of permissible materials. If you don't have a granite, marble or similar countertop, DO NOT BUY IT! You can't use on wood, laminate or even a stove top! Totally useless!