Hi mimilam and MsMair14,
As you know I think you both made a good quality/value choice … and congratulations on your new mattresses 
I hope you both have the chance to share your feedback when you’ve received them.
Dreamfoam has a platform bedframe and also sells a foundation that would be suitable for your mattress. There is also more information about the types of support systems or foundations that are suitable for different types of mattresses and some good sources for each of them as well in the foundation post here.
Phoenix