Hi supasta33,
Thank you for the kind words about TMU,
I am glad to hear that you’ve had a good experience with Plushbeds. And congratulations on the new mattress. :)! I hope that your one-year-old Boxspring is in good condition and that it works out for your new bed.
Generally, for an all latex mattress, a slatted wood base with solid slats that are no more than 3" apart (or preferably less) is best for all latex mattress. A latex mattress needs just a solid base with enough supportive surface to make sure that it doesn’t sink through any gaps and that the base is strong enough and supported on the floor well enough to take the weight of the latex mattress and the people that sleep on it. Normally this means that a slatted wood or even a metal base would be the best. Both of these are rigid non-flexing bases. The characteristics of the box spring are typically designed into the overall sleeping system itself and are an essential part of how the mattress is designed to perform in terms of pressure relief, alignment, and overall feel. In these cases, it is just as important as the mattress itself to achieve the design goals of the sleeping system. This would have more give under the mattress and can also be designed in many different ways to change the way the mattress feels and performs. As you got the “go” from Plush to use the boxspring you may wish to see how the entire system performs for you before moving in a different direction with the foundation. You can read more about foundations in Post #1 here or post #2 hereabout old box springs under a new latex mattress.
Looking forward to your future updates.
Phoenix