Can you put a mattress directly on a bunkie board? April 24, 2024 22:48 Updated Yes. A bunkie board is designed to give added support between your mattress and the bed frame it sits on. Related articles What is the purpose of a bunkie board? Can I use my existing bed frame with a Saatva mattress? What's the difference between a mattress foundation and a box spring? What is the Saatva metal bed frame? What is the Saatva box foundation?