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Mattress Foundation
Lowest price today$319 $460 -31%Range $319–$419 across 6 options
In stock Checked Oct 18, 2026, 10:10 AM ET
Tracking since Oct 18, 2026 Day 1 of price history. We need about 14 days before we call a price high or low.
Store buttons go straight to the brand's own product page. No affiliate tags yet. Prices are the listed price on the brand's site at our last check (Oct 18, 2026, 10:10 AM ET); coupons at checkout can make it lower. Disclosure
Price for every option
| Option | Price | Store's "was" price | Stock |
|---|---|---|---|
| Twin | $319 | ❌ | |
| Twin XL | $319 | ✅ | |
| Full | $349 | ✅ | |
| Queen | $379 | ❌ | |
| King | $419 | ✅ | |
| Cal King | $419 | ✅ |
Price history
About this product
Do I Need a Mattress Foundation? A good foundation isn't just about height — it's about protecting your mattress and your sleep. Sleeping on a mattress directly on the floor traps heat and moisture, voids most warranties, and can cause sagging over time. The Lull Foundation gives your mattress the firm, even support it needs to perform the way it was designed to. Foundation vs. Box Spring: What's the Difference? Traditional box springs contain coils and were designed for older innerspring m… (From Lull's product listing.)
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