Received product promptly and in good condition. Installation instructions are confusing. Sloan inserted multiple installation instructions; some of which were not specific to the model purchased. Moreover, dimensions to place the mounting bracket relative to the outlet flange is incorrect. I would suggest that you take actual measurements mocking it up on the floor with the bracket to get a "reading" before drilling mounting holes on the wall. Valve installation instructions are intended for a professional; not a casual DIY. In the end, worked out all the kinks. Urinal is running fine. Tremendous water savings (0.125 gallons/flush) compared to older models which use ~1 gallon/flush. In terms of durability, besides the valve parts, my guess is that the flange gasket and metal outlet screen will be one of the first items to wear out.