I think the product is fantastic. What a great idea. I did find the DYI element to be not quite as easy as the website seemed to suggest. I'm moderately handy at best, and it was a little intimidating to do the measuring and installation. When it was all said and done, the inserts are working well to reduce sound and keep heat in the house, so there was a happy ending for me. I plan to install them in all of my skylights. One caveat about skylight inserts: In my case, I installed an insert in a skylight with a varnished wood frame. Pushing the tight-fitting (it has to be tight-fitting in order to be effective, of course) insert into place caused varnish flecks to come loose and land on the glass. Can't clean that side without removing the insert, so there's kind of a catch 22 there. The original outer lens of the skylight in this case is frosted glass, so it's not a big deal for me, but if someone wanted a nice piece of clear glass through which to see the sky, they might need to install some 3 or 4" wide vinyl or metal trim in the frame before installing the insert in order to avoid this issue.