Hi Silverrowan,
Latex is actually one of the easier items to approximate from one model to another (as compared to polyfoam, as an example), but you still need to know the type (Dunlop or Talalay), the blend (NR, SBR or SBR/NR), and then the ILDs. And even with that information, you’d still want to know the supplier, as different formulations and fillers can be used to change the feel/properties of latex. So while you can get something “in the ballpark”, exact matches are more difficult to create. And it’s even more difficult when you’re dealing with a complex zoning system. Many mattress stores are also well aware that some of their customers may just be “showrooming” their mattresses and may be intending to purchase a similar mattress or combinations of layers and components online, so they can be reluctant to disclose ILD/IFD information to a potential customer.
All latex is generally a good quality and durable material, and you’d be interested in 100% NR Dunlop for the sake of your project. I think highly of Sleep on Latex (a site member here), and Foamorder.com is also listed as one of the component suppliers on the site.
If you are considering ordering from Foambymail (AKA FBM or Foam Factory and other names as well) then I would read this post and this post and this topic (about their polyfoam and sources) and this post (presumably from a past employee) before buying anything or considering them as a reliable supplier that provides accurate information about their foam products.
This would be the Acadia 3.0. Besides the information I’ve previously provided about zoning and come manufacturers I’m familiar with who make zoned mattresses (FloBeds V-Zone would be the most similar off the top of my head), if you are attracted to the idea of designing and building your own DIY mattress out of separate components that are purchased from one or several different sources then the first place I would start is by reading option 3 in post #15 here and the posts it links to (and option #1 and #2 as well) so that you have more realistic expectations and that you are comfortable with the learning curve, uncertainty, trial and error, or in some cases the higher costs that may be involved in the DIY process. While it can certainly be a rewarding project … the best approach to a DIY mattress is a “spirit of adventure” where what you learn and the satisfaction that comes from the process itself is more important than any cost savings you may realize (which may or may not happen).
Phoenix