Perimeter Technologies Invisible Fence Replacement Collar Wellness The wide rubber base absorbs

The wide rubber base absorbs vibrations making air pumps virtually silent

easy assembly in just 6 simple steps

The manual 4-way lock feature allows you to control your cat's access

Uses Aqueon Replacement Filter Cartridges and Specialty Filter Pads

Perimeter Technologies Invisible Fence Replacement Collar Wellness The wide rubber base absorbsDon't be fooled by the low aftermarket price. Perimeter Technologies is a brand you can trust with products that are loaded with exclusive features and benefits not found in the original. As a matter of fact, Perimeter Technologies' President is the same person that founded the Invisible Fence brand back in 1976! Compare Perimeter Technologies with your current R21: PATENTED Comfort Contacts cushion your dog's neck in soft rubber. PATENTED 3 Way, Omni