Product: A.O. Smith AOW-AS20-R Replacement Filter

Description:
- Replacement filter for the AOW-AS20 Pro Inline Descaler
- Protects water heaters, internal piping, plumbing, faucets, and appliances from scale buildup
- Extends the lifespan of appliances without the use of harsh chemicals or salt
- Helps save time and money on cleaning and repair costs

Additional Information:
- Descalers are salt-free water conditioners
- Suitable for water hardness levels of 150 ppm or below