Federal Trade Commission (FTC)
Magnuson-Moss Warranty Act
15 U.S.C. § 2301
Deconstructs the 1.5-inch innerspring warranty rule, Magnuson-Moss provisions, and photographic evidence kits.
Yes, almost all traditional innerspring and hybrid mattress warranties explicitly cover body impressions once they reach or exceed 1.50 inches (38.1 mm) of unweighted depth. While depressions under 1.5 inches are excluded as normal settling, exceeding 1.5 inches triggers mandatory manufacturer repair or replacement under the Magnuson-Moss Warranty Act. The claimant must provide unweighted photographic proof with a straightedge and ruler.
Unweighted body impressions reaching 1.50 inches or greater qualify for warranty coverage.
Requires photographic proof using a rigid straightedge and vertical ruler.
Claims must also prove compliance with foundation slat spacing and center support rules.
Explore an example related to this answer.
Calculate proration cliffs, test unweighted sagging ruler thresholds, and verify foundation slat gap compliance before submitting a claim.
Mattress warranties advertised as "25-Year" or "Lifetime" typically undergo an actuarial transition into a steep proration cliff after Year 10. Consumer defect claims require rigid straight-edge depth proof and strict foundation compliance.
Specifications
Values and benchmarks recorded for this question.
| Specification | Measured value | Benchmark | Status |
|---|---|---|---|
| Industry Threshold Standard | 1.50 Inches (38.1 mm) Unweighted Depth | Innerspring Industry Standard | pass |
| Legal Redress Mechanism | 100% Free Repair or Full Replacement | Non-Prorated Window Obligation | pass |
| Exclusion Disqualification | Depressions < 1.5" Deemed Normal Settling | Contractual Safety Valve | warning |
| Required Evidence Kit | Straightedge Ruler Photos + Law Tag + Frame | Mandatory Submission Proof | pass |
Standards reference: Benchmarks derived from ASTM D3574 (flexible cellular foam), CPSC 16 CFR 1633 (open flame flammability), and clinical capillary closing thresholds (32.0 mmHg).
Checklist
Unweighted ruler measurement and photographic documentation steps to avoid warranty claim denial.
Ensure the bottom of the straightedge aligns exactly with or past the 1.5" ruler tick.
Watch for: Submitting photos showing 1-3/8" will result in immediate rejection.
Check if edge coils have also bowed outward along the border.
Watch for: Broken perimeter coils strengthen warranty claims significantly.
Photograph the center support beam and floor contact legs.
Watch for: Inspectors will blame the foundation if center support is missing.
Sources
Read the source documents behind the thresholds, measurements, and policy details used here.
Federal Trade Commission (FTC)
15 U.S.C. § 2301
ASTM International
ASTM F1566