porcelain grade

[cass]

Hi can anyone tell me how you can tell what grade porcelain is , I have seen AAA printed on box but I cant say I have see a grade with a number next to it, or am I not looking hard enough.

 

[lizzardtong]

http:// http://www.tilersforums.com/tiling-forum/9779-what-does-grading-tiles-mean.html

 

[cass]

Porcelain is graded from 1to 5 , basicly 1 being for walls 5 for comercial grade hard wearing for shopping centers stuff like that, also some tiles are differnt thicknesses and need to be graded in to differt sizes.