Awaiting expert review. This page covers safety or regulatory rules that change over time. It is kept out of search results until a qualified reviewer has checked it; the sources below are dated so you can verify each point.
Quick answer
The UL 325 safety standard is UL’s rulebook for door, drapery, gate, louver and window operators, and its entrapment rules for garage door openers are part of U.S. federal law.
Its full title is Standard for Safety: Door, Drapery, Gate, Louver, and Window Operators and Systems. When UL revises the entrapment rules for residential openers, CPSC folds them into 16 CFR 1211 unless it objects.
Quick facts
The key facts about UL 325 Safety Standard, with sources:
Key takeaways
- UL 325 is a private safety standard; for garage door openers, its entrapment rules are federal law.
- Congress made the link in 1990; CPSC’s rule is 16 CFR 1211.
- The latest federal update took effect May 13, 2024 and adopted UL’s revisions through February 21, 2023.
- Thanks to it, openers reverse within 2 seconds, use photo-eyes and have a red release handle.
- Look for a UL listing mark or a UL 325 compliance statement on the opener label.
What UL 325 is
UL 325 is a safety standard written by UL. CPSC’s 2018 Federal Register notice gives its title as Standard for Safety: Door, Drapery, Gate, Louver, and Window Operators and Systems 4. It covers far more than garage doors: vehicular gates, commercial doors, motorized drapes and windows all fall under it.
For residential garage door openers, one part of UL 325 matters most: entrapment protection. Public Law 101-608 turned UL 325’s entrapment rules into federal law. Openers made from January 1, 1991 had to meet them. Openers made from January 1, 1993 needed added protection 6.
DASMA usually writes the name as ANSI/CAN/UL 325, reflecting its status as a U.S. and Canadian standard. DASMA’s sheets say residential openers listed to ANSI/CAN/UL 325 must include features that help prevent a person being trapped under a closing door 11.
How a private standard became federal law
Section 203 of Public Law 101-608 (1990) told CPSC to treat UL 325’s entrapment requirements as a federal rule 6. The law also set a path for later changes.
When UL wants to revise the entrapment rules, it must tell CPSC first. The change then becomes part of the federal rule unless CPSC objects within 30 days 6.
CPSC has used that path several times. UL sent CPSC revisions in December 2016 and June 2017. The June 2017 text became the Seventh Edition.
CPSC then wrote its entrapment parts into 16 CFR 1211, and that rule took effect on September 11, 2018 4. The previous update came in 2016 4 5.
The most recent one took effect on May 13, 2024. It pulled in UL revisions dated July 2019, February 2020 and February 21, 2023, which tidied the photo-eye and edge sensor tests and added a repeat check after the 30,000-cycle endurance test 3.
Not all of UL 325 becomes law. Only the parts on trapping people under home openers go into 16 CFR 1211 4. The rest of the standard (gates, commercial doors, electrical safety) works through product listing, codes and the market.
What UL 325 requires on a residential opener
| Requirement | Detail | Source |
|---|---|---|
| Inherent reverse | Start reversing within 2 seconds of contact 7 | 16 CFR 1211.7 |
| Secondary protection | Photo-eye, edge sensor, constant-pressure close, or inherent system 7 | 16 CFR 1211.6 |
| 30-second clock | Reopens a door that has not fully closed within 30 seconds 4 | CPSC 2018 |
| Manual release | Red handle, adjustable to 6 ft, detaches with 50 lb or less 7 | 16 CFR 1211.9 |
| Unattended close | Sectional doors only, with photo-eye and 5-second alert 7 | 16 CFR 1211.14 |
| Electronics reliability | UL 991, or Supplement SA of UL 325-2017 7 4 | 16 CFR 1211.4 |
Example: the UL 325 timeline for garage door openers
Key dates from the statute, CPSC rules and DASMA 6 4 3 10.
| Date | Change |
|---|---|
| May 4, 1988 | UL 325 Third Edition revision named in the 1990 law 6 |
| Jan. 1, 1991 | New openers must meet UL 325 entrapment rules (auto-reverse) 6 10 |
| Jan. 1, 1993 | New openers must add a secondary entrapment device 6 10 |
| 2016 | CPSC updates 16 CFR 1211 to UL 325 revisions to that time 4 |
| May 2017 | UL publishes the Seventh Edition 4 |
| Sept. 11, 2018 | CPSC rule adopting Seventh Edition entrapment provisions takes effect 4 |
| May 13, 2024 | CPSC rule adopting UL revisions through Feb. 21, 2023 takes effect 3 |
- 2 sMaximum time to start reversing16 CFR 1211.7
- 30 sBack-up clock reopens an unclosed doorCPSC, 83 FR 32566
- 50 lbMaximum force to pull the manual release16 CFR 1211.9
- 5 sAlert before unattended closing16 CFR 1211.14
See the full history in our UL 325 timeline research.
Where you see UL 325
On the opener: a label with the manufacture date and the UL listing mark, or a statement that the unit is built to UL 325 or federal standards.
DASMA says that is how to identify a compliant opener made after January 1, 1993 10.
The 1990 law also required makers to mark the month or week and year of manufacture and conformance on the unit and its box 6.
On the box and in the manual. CPSC wants a certification mark on the product and a certificate that cites 16 CFR 1211 8. The manual must contain specific safety instructions in set wording and type sizes 7.
On gate and commercial door quotes: installers cite UL 325 entrapment classes and monitored devices. DASMA notes only monitored edge sensors evaluated with the operator to ANSI/CAN/UL 325 may be used as entrapment protection 12.
UL 325 beyond the home garage
The same standard governs gates, commercial doors and high-speed doors, where federal residential rules do not apply directly. DASMA publishes separate guidance on gate operators and UL 325, and on UL 325 and high-performance doors 2.
For those systems, the practical rule is about monitored devices. DASMA explains that a monitored system checks that its safety device is there and connected.
If it finds a fault, the door only moves while someone holds the button, or by hand.
Only monitored devices may be used as entrapment protection; non-monitored edges can be used for property protection only 12.
This matters at home in one case. Someone may suggest a commercial operator for a heavy home door. DASMA says no: a commercial unit can go into a single-family home only if it first meets UL 325’s home rules 10.
What the standard achieves and its limits
Achieves
Limits
- Applies to new products by manufacture date; old openers are not retrofitted 7.
- A listing cannot fix a bad installation or a disabled sensor.
- The standard itself is a paid document; the public reads it through the federal rule.
What UL 325 does not cover
The door itself. Springs, cables and balance sit outside UL 325’s opener rules. DASMA covers them in its own sheets. It also says a door is only safe when it is balanced and the safety devices work 14.
Older openers. 16 CFR 1211 applies to residential openers manufactured on or after January 1, 1993 7. No law makes owners replace older units. Still, CPSC has urged people to replace any opener that does not reverse 9.
Field testing to full compliance. DASMA notes the 2x4 test a technician does is not full UL compliance testing, which can only be done in a lab 10.
Cost factors linked to UL 325
No prices on this page. See the cost guide.
How to check your opener against UL 325
- Find the opener’s label: manufacture date and UL mark or compliance statement 10.
- Confirm photo-eyes or an edge sensor are installed and working 7.
- Run the monthly 2x4 reversal test and photo-eye test 13 11.
- Check the red manual release is present and reachable 7.
- If anything fails, call a technician; if the unit predates 1993, plan a replacement.
- Made on or after Jan. 1, 1993
- UL listing mark or compliance statement
- Photo-eyes or edge sensor
- Passes 2x4 reversal test
- Red manual release handle
- Warning label by the wall button
Keeping a compliant opener compliant
Risks of ignoring the standard
An opener that does not meet UL 325 can close on a person with no second chance. CPSC’s 1991 release counted 48 child deaths under automatic doors since 1982 9.
Recalls still happen to listed products. In February 2023 CPSC announced a recall of about 96,400 LiftMaster myQ control panels in the U.S. because the secondary entrapment protection could fail and let the door close with an obstruction present; no U.S. incidents were reported 1. Our recalls research lists more cases.
A listing is not a license to bypass
UL 325 compliance assumes the safety devices are installed and working. Disabling photo-eyes, jumping sensor wires or raising force settings defeats the standard. Call a technician instead.
Legal status
For residential garage door openers, UL 325’s entrapment provisions are mandatory through 16 CFR 1211 7 4. CPSC calls 16 CFR 1211 a mandatory federal consumer product safety standard 8.
States add rules on top. DASMA says California, Minnesota and New York banned selling or fitting openers that fall short. Those states and Indiana also make installers test and tag units 10.
UL 325 vs related standards
| Standard | Covers | Status |
|---|---|---|
| UL 325 | Door, gate, drapery, louver, window operators | Voluntary; entrapment parts federal for residential openers |
| 16 CFR 1211 | Residential garage door openers | Mandatory federal rule 7 |
| UL 991 | Solid-state safety controls | Referenced in 16 CFR 1211 7 |
| ANSI/DASMA 102 | Sectional door specifications | Voluntary; required for combination systems 7 |
| DASMA TDS | Industry guidance sheets | Voluntary guidance |
Myths about UL 325
- Myth UL 325 is only about garage doors.
- Reality It covers door, drapery, gate, louver and window operators 4.
- Myth All of UL 325 is federal law.
- Reality Only the home opener rules on trapping go into the federal rule 4.
- Myth A UL mark means any installation is safe.
- Reality The installation and monthly tests still matter 13.
State rules on top of UL 325
What UL 325 means for your next opener
Every new residential opener sold in the U.S. must meet the federal rule, so focus your choice on drive type, noise and features. What you control is installation and testing: insist the installer sets photo-eyes correctly and tests reversal before leaving. Compare models with the opener selector.
Standard vs rule
UL 325 is the standard UL writes. 16 CFR 1211 is the federal rule that makes its residential opener entrapment parts mandatory.
Questions about UL 325 Safety Standard
What is UL 325?
UL 325 is UL’s safety standard for door, drapery, gate, louver and window operators. Its entrapment protection rules for residential garage door openers are adopted into federal law at 16 CFR 1211.
Is UL 325 required by law?
For residential garage door openers, its entrapment provisions are mandatory through 16 CFR 1211, as directed by Public Law 101-608. Other parts of UL 325 work through product listing and codes.
What edition of UL 325 is in federal law?
The Seventh Edition, as revised. CPSC adopted it in 2018, then took in UL’s later revisions through February 21, 2023 with a rule that took effect on May 13, 2024.
How do I know if my opener meets UL 325?
Check the label for a manufacture date on or after January 1, 1993 and a UL listing mark or a statement of UL 325 or federal compliance, as DASMA describes.
Does UL 325 apply to gates?
Yes. UL 325 covers gate operators too. DASMA publishes separate guidance on gate operators and UL 325.
What does UL 325 require for garage door openers?
The opener must start to reverse within 2 seconds of contact. It needs a second safety device, a 30-second back-up timer and a red release handle. Timer or app closing has its own rules.
Do older openers have to meet UL 325?
The federal rule applies by manufacture date, not retroactively. Openers made before 1993 may lack required features; CPSC has advised replacing openers that lack automatic reversal.
Can a commercial opener be used at home?
Not unless it first meets UL 325’s residential requirements. DASMA says commercial or industrial operators may never go into a single-family home otherwise.
Sources
- U.S. CPSC recall 23-725, Chamberlain Group Recalls LiftMaster myQ Garage Door Control Panels Due to Entrapment Hazard (Feb. 9, 2023), retrieved .
- DASMA, Technical Data Sheets (index), retrieved .
- Federal Register 89 FR 18538 (Mar. 14, 2024), CPSC direct final rule amending 16 CFR 1211 to UL 325 revisions through Feb. 21, 2023, retrieved .
- Federal Register 83 FR 32566 (July 13, 2018), CPSC direct final rule amending 16 CFR 1211 to UL 325 Seventh Edition, retrieved .
- Federal Register 81 FR 20228 (Apr. 7, 2016), CPSC rule amending 16 CFR 1211, retrieved .
- Public Law 101-608 § 203 (Nov. 16, 1990), Automatic Garage Door Openers (15 U.S.C. 2056 note), retrieved .
- 16 CFR Part 1211, Safety Standard for Automatic Residential Garage Door Operators (eCFR, current), retrieved .
- U.S. CPSC, FAQ: Automatic Residential Garage Door Operators (16 CFR 1211 certification), retrieved .
- U.S. CPSC news release, Government and Industry Move to Reduce Garage Door Opener Child Entrapment Deaths (Dec. 3, 1991), retrieved .
- DASMA Technical Data Sheet #351, Federal and State Garage Door Operator Legislation Guidelines for Dealers and Installers, retrieved .
- DASMA Technical Data Sheet #364, Installation Location of Photoelectric Sensors on Residential Garage Doors, retrieved .
- DASMA Technical Data Sheet #368, Edge Sensors, retrieved .
- DASMA Technical Data Sheet #369, Frequently Asked Questions Regarding Automated Residential Garage Door Systems, retrieved .
- DASMA Technical Data Sheet #167, Residential Sectional Garage Door and Electric Operator Checklist for Home Inspectors and Consumers, retrieved .
Expert review
Written by the HyreGarage Research team. Not yet reviewed by an outside expert. We say so rather than imply a review that has not happened; see our editorial policy.
How the numbers were checked: Legal history from Public Law 101-608 § 203 and CPSC Federal Register notices (2016, 2018, 2024); requirements from 16 CFR 1211; identification and state rules from DASMA TDS-351. Held for review by a qualified safety professional.
Suggest a correction. We fix errors and say what changed.