- BUILT TO LAST With 9 Support Legs - Solid and reliable, the Keenan Smart Ensemble Bed Base has a strong metal frame, reinforced centre beam and METAL slats underneath the fabric covering spaced at the optimal width to prevent sagging, motion-free sleep and increase your mattress life. - ASSEMBLES QUICK, STRESS-FREE - All tools, parts and instructions are conveniently packed into one box for set-up that takes less than an hour with a friend's help. Now that's what we convenience! - SHIPPED SMARTLY & EASY TO MOVE - Everything you need will arrive in one box to make moving through hallways and upstairs easier - STRONG MATTRESS SUPPORT - Our bed basess are designed to support all mattresses! Rest your memory foam, latex or spring mattress on top for smooth snoozing. - WARRANTY - Zinus has a 5 year limited warranty on our bed frame