ACE equivalent, made by Culligan
Carbon, 5 micron filter, 2 filter shrink wrap package
Culligan - D-10A - Under Sink Replacement Cartridge For US-550, US-600, and SY-2000
https://www.walmart.com/ip/Culligan-Culligan-D-10A-Under-Sink-Replacement-Cartridge-For-US-550-US-600-and-SY-2000/2235899559
Call or text 509 670 3147
Located in Twisp