Material: 3mm thick Acrylic Size: 2×2 feet round How to install? You will get a stencil in the parcel, place that on your wall and just stick all the digits where they belong with the help of stencil. so easy and Fun thing to do. To be pasted on the wall through double sided tape available in the parcel. Machine to hang on a single nail. easy peasy . 1 year clock machine warranty. (Y) This clock is in pieces, so don’t be surprised if you get it in a small box