FAQ BED FRAMES CAN I PUT MY MATTRESS DIRECTLY ON THE METAL BED FRAME? SEE ALL QUESTIONS CAN I PUT MY MATTRESS DIRECTLY ON THE METAL BED FRAME? You cannot put a Casper mattress directly on the frame. The metal bed frame is designed to be used with the Casper foundation or any modern style box spring/foundation. YOU MAY ALSO LIKE Tell me more about the foundation.
