Forever Foundation Plus Size: Queen Two-In-One...bed support and foundation. Six 8-inch legs (glides) total height 16-inches. More legs provide additional edge and weight support. 7 slats provides greater weight distribution. 14-inches of vertical, clear-span space under the mattress. Additional leg heights available. Headboard brackets included. Includes a fabric deck for added support, allows the mattress to breathe and filters unwanted allergens. Steel frame naturally resistant to bed bugs. 100% recyclable. Exempt from mattress recycle laws.