Rug Flammability Rules for Importers: 16 CFR 1630 and 1631

Rug flammability for U.S. imports is governed by two CPSC standards defined by size: 16 CFR 1630 for large carpets and rugs and 16 CFR 1631 for small ones. As written, the two size definitions do not cover every rug. Both are certifiable rules, both sit on CPSC’s general and children’s certificate lists, and carpets and rugs are on CPSC’s 1USG screening list. Since July 8, 2026, every rug entry in scope has to carry certificate data into ACE through the CPSC PGA Message Set.

The two standards look alike but behave differently at the point of sale: a large rug that fails cannot be sold, while a small rug that fails can still be sold if it carries a permanent FLAMMABLE label. One-of-a-kind rugs add a third path that is often misfiled. This piece covers those mechanics for rug importers. The general CPSC import framework is in our CPSC compliance guide.

1630 vs 1631: Which Rug Flammability Standard Applies

16 CFR 1630 applies to large carpets and rugs, defined as those with one dimension greater than 6 feet and a surface area greater than 24 square feet. Carpet squares count toward that definition when they are assembled into a larger area. 16 CFR 1631 applies to small carpets and rugs, defined as those with no dimension greater than 6 feet and an area not greater than 24 square feet. Both parts cover mats and hides with natural or synthetic fibers within their size definitions; resilient floor coverings are excluded.

Each definition has two cumulative conditions, and runners are where importers misread them. The two definitions do not cover every size. A runner with one side over 6 feet but 24 square feet or less, or a rug over 24 square feet with no side longer than 6 feet, meets neither definition as written, so the standard to cite for those sizes should be confirmed with CPSC before certifying. The standard follows the physical dimensions, not the product name or the HTS subheading.

The Small Rug FLAMMABLE Label Option

The practical difference between the two parts is what happens on a failure. Large rugs under 1630 must pass. Small rugs under 1631 that fail the standard may still be sold, provided they are permanently labeled under 16 CFR 1631.5 with the prescribed warning, which begins: FLAMMABLE (FAILS U.S. DEPARTMENT OF COMMERCE STANDARD FF 2-70). The full label text is set out in 1631.5.

The label option does not remove the certificate. A labeled small rug is still a product subject to 1631, so the certificate still cites 1631 and still rests on testing. What changes is the compliance outcome: the rug complies by carrying the label rather than by passing.

Rugs given a flame-retardant treatment carry a separate marking duty: FR-treated rugs need the T mark. A treated rug whose label or mark is missing is a compliance defect even if the rug itself would pass.

The one-product-per-certificate rule applies to rugs as to every certified product: a change in design, manufacturing process or location, or component or material source makes a rug materially different and requires its own certificate. Size variants of the same construction need care, because a size change can move a design from 1631 to 1630, or into a size neither definition covers, and change which rule the certificate cites.

One-of-a-Kind Rugs: A Testing Exclusion, Not a Disclaim

Antique rugs, Oriental rugs and hides that qualify as one of a kind are the rug category most easily misfiled at entry. The instinct is to file them as exempt, with no certificate. That is wrong. The one-of-a-kind provision is a testing exclusion under 1630.2(b) and 1631.2(b), not a disclaim, and a certificate is still required.

The mechanics follow CPSC’s code structure. The certificate cites the rule (1630 or 1631), and instead of test data for that rule, the one-of-a-kind status is entered as a testing exclusion code. In the Full message set under CATAIR v2.5, that means the PG19 entity role NOL (no lab testing) with the exclusion code in PG60. A testing exclusion claimed without the underlying rule citation is one of the predictable failure points that follow from the rule and the implementation guide.

For a dealer importing one-of-a-kind pieces individually, the Full message set is the natural fit, since each piece is its own product. The certificate still needs the seven data elements required by 16 CFR 1110.11, including the date and place of manufacture to at least month and year, which for older pieces means the importer needs a documented basis for the date it states.

Testing Basis for Rug Certificates

Which lab can test depends on the certificate type. Most rugs are general-use products certified on a General Certificate of Conformity. A GCC can rest on a test of each product or a reasonable testing program, and testing by any qualified lab, including first-party testing at the mill, is acceptable. The certificate must still name each lab or party whose testing it relies on, with name, address, email and phone, and give the most recent test date.

A rug designed or intended primarily for children 12 or younger is a children’s product and goes on a Children’s Product Certificate. That changes three things. Testing must come from a CPSC-accepted third-party lab, entered in the Full message set with role ITL and its mandatory 4-digit Lab ID. Periodic third-party testing applies under 16 CFR 1107.21. And other children’s rules come into play, including total lead content, where CPSC’s textile lead determination at 1500.91(d)(7) is entered as an exclusion code for the textile while any non-textile components still need their own basis.

Component testing under 16 CFR part 1109 can support either certificate, with due care and traceability. Component certificates are never eFiled, but the testing relied on must appear on the finished rug’s certificate.

GCC and eFiling for Rugs

At entry the importer transmits the Full PGA Message Set, with every certificate data element, or the Reference PGA Message Set, which carries the Certifier ID, Product ID and Version ID of a certificate already certified in CPSC’s Product Registry. For a mill program with recurring designs, the Reference set is the practical route: CPSC estimates 15.3 seconds per Reference filing against 4.75 minutes per Full filing (90 FR 1800). The Registry supports bulk CSV upload and an API, and a certified record can be edited only within 48 hours before a change requires a new Version ID. Our CPSC certificate eFiling service runs both paths for rug programs.

Carpets and rugs are one of the categories on CPSC’s September 2026 HTS list and on its 1USG list. Flagged lines return an Under Review status. The CPSC clock is 8 business hours for ocean freight, extended to 16 with added risk factors, and 4 or 8 for air and truck, counted 8am to 4pm port time. If CPSC takes no action, a May Proceed issues automatically. Correct HTS classification matters here because it decides which lines CPSC flags.

Methods can be mixed within one entry, so a container with large rugs on Reference sets and antique pieces on Full sets carrying exclusion codes is a normal filing, provided each HTS line resolves to one method. A licensed customs brokerage team can map both paths, but the certificate content remains the importer’s responsibility under 16 CFR 1110.15.

Zone inventory and timing

Rugs held in a foreign-trade zone become subject to eFiling when entered for consumption or warehousing from the zone on or after January 8, 2027. CPSC requires the actual certificate of the goods withdrawn, not the latest certificate for the design, so zone records need certificate versions attached to specific receipts.

Where Rug Entries Break

These risks follow from the rule and CATAIR; CPSC has published no hold or rejection statistics since eFiling began on July 8, 2026.

• A one-of-a-kind rug disclaimed instead of certified with a testing exclusion code.
• A runner or square certified to 1630 or 1631 without checking both size conditions, including sizes that meet neither definition as written.
• A small rug that failed 1631 shipped without the permanent 1631.5 FLAMMABLE label.
• An FR-treated rug missing its T mark.
• One certificate stretched across designs from different mills or with different material sources.
• A children’s rug certified on a GCC, or on a CPC without a CPSC-accepted lab and Lab ID.
• Manufacture date and place on the certificate not matching the mill on the commercial invoice.

Exposure when the certificate is missing or wrong

ACE does not reject entries for missing CPSC data (CSMS #69382435, July 29, 2026), and CPSC has said it does not currently intend to ask CBP to deny entry solely for failure to eFile. Missing or false data still raises the shipment’s risk score. Goods not accompanied by a required certificate, or accompanied by a false one, can be refused admission under 15 U.S.C. 2066(a)(2) and destroyed unless export is approved and executed within 90 days, at the owner’s or consignee’s cost. Civil penalty maxima stand at $120,000 per violation and $17,150,000 for a related series (86 FR 68244).

A SKU-level record of size, construction, mill, treatment, test basis and certificate version, kept in a trade compliance management system, prevents most of these mismatches before the booking. Our customs compliance platform carries certificate identifiers alongside entry lines so the broker can check them before transmission.

Frequently Asked Questions