Mattress Regulations and Flammability Standards in the United States

Federal law governs how every mattress sold in the United States must perform in a fire — not as a voluntary guideline, but as a mandatory compliance threshold backed by the Consumer Product Safety Commission. Two distinct federal standards cover different fire scenarios, and understanding which applies where reveals a great deal about how the mattress industry operates. This page covers those standards, how they're tested and enforced, where state-level rules add additional layers, and what separates a compliant mattress from a non-compliant one.

Definition and scope

The foundation of mattress fire safety in the United States rests on two federal standards issued by the Consumer Product Safety Commission (CPSC):

• 16 CFR Part 1632 — the "cigarette ignition" standard, which has been in effect since 1973 and addresses smoldering ignition from a lit cigarette placed on the mattress surface.
• 16 CFR Part 1633 — the "open flame" standard, effective July 1, 2007, which requires mattresses to resist a much larger ignition source: an open flame equivalent to burning bedclothes.

Both apply to mattresses sold at retail in the United States. Futons, crib mattresses, and mattress pads occupy separate regulatory categories, though the CPSC maintains related requirements for each. The open-flame standard under 16 CFR Part 1633 is the more demanding of the two — and the one that drove the most significant reformulation of mattress materials across the industry after 2007.

What qualifies as a "mattress" under these rules is itself defined: the CPSC specifies a resilient material or combination of materials enclosed in a ticking, used alone or in combination with other sleep surfaces, intended or promoted for sleeping. That definition, available in full at CPSC's regulatory database, is broad enough to capture foam-only beds, innerspring designs, latex constructions, and the hybrid mattress configurations that blend those materials.

How it works

16 CFR Part 1632 uses nine lit cigarettes placed in prescribed positions across the mattress — on the surface, along the edge, and at the border tape — and measures char length. A mattress passes if no char length exceeds 2 inches (CPSC, 16 CFR 1632).

16 CFR Part 1633 is structurally more complex. It uses two T-shaped gas burners to simulate burning bedclothes and requires that:

Manufacturers must qualify each mattress model through prototype testing before it reaches retail. Test records must be retained for 3 years, and the CPSC conducts periodic audit testing on mattresses pulled from retail channels. Failures can trigger mandatory recalls.

The dominant compliance mechanism used by most manufacturers is a fire-barrier layer — typically a fabric or batting made from inherently flame-resistant fibers such as silica, fiberglass, or modacrylic blends — placed between the ticking and the comfort layers. Some manufacturers achieve compliance through FR-treated foam, though consumer concerns about chemical exposure have shifted preference toward barrier-layer approaches. The organic and natural mattress segment often uses wool barriers, which achieve compliance through wool's natural char-forming properties rather than chemical treatment.

Common scenarios

Three situations illustrate where the regulations have practical bite:

Direct-to-consumer mattress brands — companies selling mattress-in-a-box products — must meet the same federal standards as traditional manufacturers. A startup sourcing foam from an overseas supplier still bears full compliance responsibility under CPSC rules. The 2007 open-flame standard caught several smaller entrants off-guard when it took effect, requiring material reformulation across product lines.

Import mattresses fall under the same standards the moment they enter US retail commerce. U.S. Customs and Border Protection works alongside the CPSC on import surveillance; non-compliant mattresses can be refused entry or recalled after distribution.

Crib mattresses are governed separately under 16 CFR Part 1632, with testing adapted to the geometry and use context of infant sleep surfaces — a distinction that matters because the heat-release thresholds and ignition scenarios in Part 1633 were calibrated for adult mattresses.

State-level rules add an additional layer in California. The California Bureau of Electronic and Appliance Repair, Home Furnishings and Thermal Insulation enforces the California Flammability Regulations under California Business and Professions Code §19160, which includes Technical Bulletin 603 for mattresses. California's standard parallels the federal open-flame test but applies to a broader set of sleep-related products and requires separate California documentation.

Decision boundaries

The regulatory line separating compliant from non-compliant hinges on four structural questions:

1. Is the product a "mattress" under the CPSC definition? Mattress pads and toppers face different or no open-flame requirements — a mattress topper is not regulated under 1633.
2. Has the specific model been prototype-tested? Model-level testing is required; results from a similar product do not transfer.
3. Are records retained for the required 3-year period? Record-keeping failure is itself a compliance violation independent of the product's actual fire performance.
4. Does the mattress carry accurate law label disclosures? The federal law label — that tag famously threatening consequences for removal — must disclose materials content accurately under 15 U.S.C. §70 et seq. (the Textile Fiber Products Identification Act) and CPSC regulations.

The mattress certifications and standards landscape adds voluntary third-party marks — CertiPUR-US for foam chemistry, GOTS for organic textiles — on top of these mandatory thresholds. Those certifications address chemical content and environmental criteria that federal flammability law does not reach. The full scope of what makes a mattress compliant, safe, and independently verified is broader than any single standard — a useful reminder that the mattress industry as a whole operates under overlapping layers of public and private oversight. For readers building a broader picture of how these standards fit into the mattress landscape, the National Mattress Authority home resource organizes the full subject area by topic.