Product review (5 stars): Great ice cubes
Easy install with some 1/4 copper tubing and sharkbite connectors. No leaks, ice cube trays fill up, and Wife say's the ice cubes taste way better,  Don't know if it was overkill getting a level a level 4 over a level 1?  Base allows any of the Level replacement filters to be attached so can always downgrade if desired.