Product review (5 stars): easy replacement
Looks exactly like the unit I replaced: Kenmore Coldspot 106.56586500
Works great!  These compression fittings couldn't be easier.. If you pull on a line you'll see how it works, just hold the inner ring down and pull to get the line out; push it in to connect it.  To make sure I didn't mess up, I held the new unit in the same orientation as the old one and moved 1 line at a time from the old to new , then unscrewed the old one and screwed the new one in.  Took maybe 5 minutes counting the time it took me to go downstairs and turn off the water -- speaking of.  My fridge is connected with a "self-piercing saddle valve" -- These are apparently super-bad and not to be messed with, so I shut off water to most of the house and drained the line at the faucet before working on this.