The HUB PROTECTOR and SMART HUB PROTECTOR are protective cases made from high-quality plastic, designed to safeguard transformers from precipitation and extreme weather conditions. The HUB PROTECTOR is specifically for the HUB-50 and HUB-100 models, while the SMART HUB PROTECTOR is tailored for the SMART HUB-150, and the SMART HUB PROTECTOR 2 is for the SMART HUB-300. These accessories extend the lifespan of the transformers when installation in a covered, sheltered location is not possible.