I have had the several spray in bed liners and I went with the dual liner this time. Initial install took about 30 - 45 mins. But I have the factory 5th wheel hitch in my truck so I had to do some modifications which took me about 6 hrs. To cut out the side panel and rubber floor mat for the hitch and electrical connector. Check out my photo album there is a pic there. I would have posted here but couldn't get the URL copied on my iPad to paste into post. They also have a discount code here in this thread. So far I'm very pleased with it.