Yes it is and here is a link
http://www.eastwood.com/internal-fra...arent_id=25961
We needed this kind of product for my 1/2 ton project and decided to use it again for this one.
Some of my reasons for using this product are I've used it before, the color you can tell where it is and where it ain't. This stuff does go on sale and if you buy enough you can get free shipping as well at times so the price was right for us (got 5 cans for under $75 delivered) . It has been around and I think has more favorable reviews?
Other than that I have no opinion except for as much time and effort that goes into fixing one of these cabs I think you would be foolish not to use something.
