Most conversion frames list compatibility with standard twin, full, and queen mattresses. Check the product listing to confirm the exact sizes supported.
Some conversion frames require a box spring or a bunkie board to properly support the mattress. Panel-style frames often explicitly state a box spring is required—verify the support requirement on the product details for the model you’re considering.
Murphy cabinet beds typically use slatted mattress supports—either flexible or solid wood slats. Some product descriptions list a specific number of slats (for example, 12 slats in certain models).
Murphy cabinet beds commonly recommend thinner mattresses, with many listings specifying about 4"–6" (up to 6 inches). Conversion frames typically don’t specify mattress thickness and instead rely on a box spring or bunkie board to support the mattress—check the listing for guidance.
Conversion frames are usually metal. Murphy cabinet beds are wood-based, commonly made from MDF and plywood, with some models using pine or other solid wood components (including solid wood slats).
