I have posted about being in the same room as the AV rack when lightning struck outside of the house, sometime around 2014 (may have actually hit the Copper gutter) and I heard a fairly loud snap sound in the room. The Furman Elite 15-PFi never hiccupped and none of the equipment has ever had a problem since it was installed in 2007. Those models are described as 'non-sacrificial'. It's rack mountable and heavy- never looked inside, though.