Which Purple mattresses are compatible with the Purple Metal Platform? The Purple Metal Platform’s steel frame supports up to 2,000 pounds, making it a perfect option for every Purple mattress. Related articles Is the Purple Metal Platform compatible with decorative bed frames? How far apart can the slats be on my foundation or base? What is the Purple TwinCloud Pillow Return Policy? Can I use a headboard with the Purple Metal Platform? What is the Purple Metal Platform return policy?