Hi colchao,
Thanks for taking the time to share such detailed feedback … I appreciate it. It will also be interesting to see how things progress as the mattress breaks in and you adjust to a new mattress over the next few weeks and I’m looking forward to your updates 
[quote]The foundation required assembly, but it was very straightforward and quick. However, as you can see in the pics below, the slats are over 4 inches apart. Peter at Select Foam had told me they were 3 inches apart.
***It seems the pics aren’t working. I’ll try and add them to this post later.[/quote]
There is a glitch in the forum template code I think and sometimes the “add file” button doesn’t work but if you click in the window above it (beside the 1.) the add file box where you can choose the file to attach should come up. In the worst case … if you email the pictures to me at the contact link at the top of the page I can add them for you.
Most of the KD foundations have about 4" gaps except for a couple that are in the foundation thread here. The one you linked uses fairly low quality materials and a low quality cover so this would probably be the reason for the lower cost (if you read some of the reviews with less stars you will see some of the consistent comments about this). 4" or even a little more is fine for the polyfoam in the bottom of a memory foam mattress though and 3" gaps or less are more important if the bottom layer is latex because it is more elastic than polyfoam and can sink into gaps more easily. These are usually shipped by a third party so they may have received misinformation from their supplier (some suppliers I’ve talked with when I was putting the foundation thread together didn’t know the size of the gaps and had to go and measure) but I agree it would be helpful if they knew the width of the gaps.
I’m guessing one of the labels would be where the cover was made and the other would be where the mattress was put together.
As the mattress took form, I noticed that it was about 12.5" tall! (see pic). This was supposed to be an 11" mattress, so I wondered if they had sent me the wrong model by mistake (there’s no identifying label–just “Cirrus Supreme” written in marker on the outside of the shipping box.) But I guess this will compress over time down to the 11"? Or maybe this kind of variation is normal. Also, there is a bit of off-gassing. It’s not overpowering, but definitely noticeable. 24 hours later, it’s not gone, but it has diminished a bit.
Almost all new mattresses will have some smell in the first few days but this goes away quickly. I don’t know the reason for the additional height and the foam won’t compress down. Out of curiosity I would be tempted to call them and ask the reason. It’s possible that they tweaked the design but this is a bigger variation than you would normally see in the thickness of a mattress. The model name should also be on the law tag.
Thanks again for the feedback and if you have any trouble attaching the pictures I’ll be happy to attach them for you.
Phoenix