Product review (4 stars): You may be wondering about the pipe sizes
The description didn't include a few details so here they are -- OB-8130 White, Assembled, 1/2" PEX x 1/4" Comp -- this unit includes a hammer
arrester and quarter-turn brass ball valve.  Pretty good price (at this writing) for a ice maker box with hammer arrester, however this model is not lead free.