First Avaya is now owned by CommScope and is listed on their site as "Systimax".
The part number for the cable depends on a number of factors: material composition, rating (There are 2 types of category 6 available), color packaging, etc. The surface box also comes in several colors and configurations. Here is a url to the current catalog:
You can find category 6 cable on catalog pages 13 through 28.
There are 2 types on surface mounting boxes shown on catalog pages 249 & 250
Joseph Golan, RCDD