Bullfrog Filter Core Cage & Cap Assembly (10-00417) Spa Parts The thermometer comes with Duracell®

The thermometer comes with Duracell® batteries included

helps maintain water clarity and reduces overall pool maintenance

Your filter does the invisible work that keeps a spa pleasant

This pillow does have a groove at the bottom

add one cup of pool water to one cup of tap water

Bullfrog Filter Core Cage & Cap Assembly (10-00417) Spa Parts The thermometer comes with Duracell®The Filter Core Cage & Cap Assembly is the genuine Bullfrog Spas component that gives a coreless filter its structure. Bullfrog's coreless filter cartridges deliberately leave out the rigid plastic center core that traditional filters are built around and this reusable cage is what takes its place inside the spa. The filter slips over the cage, the cap secures it, and the cage provides the support and water path the cartridge needs to do its job. This