A.O. Smith Clean Water Machine or Fridge Carbon Block Under Sink Replacement Filter - AO-US-100-RA. O. Smith Clean Water Machine or Fridge Carbon Block Under Sink Replacement Filter AO US 100 R Advanced Filtration Reduces up to 99% of 78 harmful contaminants including lead, mercury, asbestos, pesticides, pharmaceuticals, chlorine, microplastics, and more Replacement filter for A O Smith: Clean Water Machine (AO CWM) or Refrigerator Under Sink Single Stage Water Filtration System (AO FF) Use only certified, genuine A O Smith replacement filters

Elegant demilune design: The semi-circular (demilune) shape adds a refined

and long-lasting outdoor durability

proper spacing improves airflow and presentation

while optimized for video

and material tear‑out

this durable machine withstands intense training

Q: Is it compatible with Marshall systems

Overall thickness 15/16”

Dry EnvironmentProtects against dust and fungus—especially important in humid conditions

perfect for architecture

ideal for roasting and baking

Featuring dual digital displays for real-time display of actual charging voltage and amperage and AC power-on diagnostics with pass or fail status in addition to discreet fault indication for mis-wiring or adverse battery bank conditions