The Swimline Hydrotools off-line chlorine feeder is ideal for built-in above ground and in ground swimming pools because you do not have to undo or adjust plumbing to install. This model does not install inline and installs by tapping into existing plumbing

The Model 87503 Premium Off Line Automatic Chlorine Feeder Features Include

• Installs by tapping into existing plumbing without need to alter pipes or install inline
• Holds up to 9 lbs of chlorine sticks, 1" tablets and 3" tablets
• Easy to use dial is used to regulate amount of chlorine to be released into pool water
• Heavy-duty durable resin materials and construction
• Hardware for installation including clamps, screws and washers and Teflon tape
• Replacement parts are easily available