The Next Generation Bed Frame – The Premium 18 Inch Smart Base Mattress Foundation by Zinus eliminates the need for a box spring as your memory foam, spring or latex mattress should be placed directly on the Premium Smart Base. The Premium SmartBase works especially well for lower profile 6, 8 and 10 inch mattresses, giving your bed a ‘lift” for extra storage as well as ease of use. Uniquely designed for optimum support and durability the strong steel mattress support has multiple points of contact with the floor for stability and prevents mattress sagging, increasing mattress life. The Premium Smart Base bed frame is 18 Inches high with 17 Inches of clearance under the frame for 4 extra Inches of under-bed storage space. With plastic caps to protect your floors and an innovative folding design to allow for easy storage, the Smart Base is well designed for ease of use. Worry free 5-year limited warranty. Another comfort innovation from Zinus. Pioneering comfort.