Product review (1 stars): good product; customer no service.
1 star for no documentation and customer no service. otherwise great product for the money. hope it holds up. no installation manual. no user manual.  unit wouldn't power on initially. user error admitedly.  but since there is no documentation there was no trouble shooting tips. we called z line. they told us to contact amazon to return the hood. first we are on a deadline. second, amazon doesn't like big ticket returns. we are building a house. things sometimes need to be returned but we try to avoid it. the z line rep gave customer no service. no technical help. then blamed us for buying through Amazon. you guys chose to distribute and sell through Amazon. if you don't want customers purchasing through a particular channel then don't sell your products there.