Product review (1 stars): Not worth the try
I bought a 687-30 in Nov 2015, the led light bulbs went off and I bought the new light bulbs to replace, but it did not work.  I called the Z-line and they sent me the light box kit, after installation, it smells burnt.  I like the powerful vent but the quality is not that stable. Also the louvers are very easy to drop out if you don't install well.  Also replace light bulbs is very difficult to put the clip back.  I decided to buy another brand and can not trust Z-line anymore...