Why is it called a LATICRETE® 500 Series, sanded grout?

It is called LATICRETE® 500 Series grout as it is has many colors available as variants to choose from and the first digit
starts with 5 and ends with the number code of the color. For example, LATICRETE® 545 stands for Raven color and
LATICRETE® 544 stands for bright white color. All the color variants have the same physical properties when used and
don’t differ in performance. It is called sanded as it is used to fill wider joints more than 3mm width and up to 12mm width.