Monster 3 Grow Pot Add-on C.A.P. (Custom Automated Products) Monster 3 Grow Pot Add-on (CAEBBMEXP3)This is the 3-pot expansion kit for the Monster 6-Pot complete system. You can add two of these kits to the system for a total of 12 sites.
Manufacturer's Product Information
... — Ships separately from HF: OR, CA, CO, MI, PA USA....more info.