UL 325 is a safety standard for door, gate and related operators and systems, including entrapment protection for automatic gate operators (UL Solutions). For a property owner, it is a useful starting point for asking whether the proposed equipment is appropriate for the entrance.
Ask the installer to identify the operator’s listing and intended application. Then ask how the installation addresses the gate’s actual hazards.
The operator and the gate are evaluated together
UL 325 addresses operators and safety functions, while ASTM F2200 covers automated vehicular gate construction (DASMA’s current installation guidance). The equipment choice therefore needs to be considered alongside the physical gate and its surroundings.
Ask what work is included if the existing gate needs mechanical or protective changes. A replacement proposal should make those recommendations visible.
What do the operator classes mean?
DASMA summarizes four application classes: Class I for residential use associated with one-to-four single-family dwellings, Class II for commercial/general public access, Class III for industrial/limited public access and Class IV for guarded restricted access (operator classifications).
The installer should match the operator’s marked classification to the site (DASMA). Tell the installer who uses the entrance and how access is controlled rather than choosing equipment from the residential/commercial label alone.
What is monitored entrapment protection?
Monitoring allows the operator to check the presence and connection of external entrapment-protection devices during operation (DASMA). The manufacturer identifies compatible sensors, and the protection arrangement must address the applicable entrapment zones (DASMA).
Ask which devices are proposed, where they will be installed and how their operation will be demonstrated. Don’t treat a sensor fault as a reason to disconnect it.
Does an older gate automatically need replacement?
Age alone doesn’t answer that question. DASMA states that UL 325 itself is not retroactive, while noting that adopted building and fire codes may apply to installations (current installation guidance).
Have the installer evaluate the equipment and site, and confirm the requirements that apply locally. Avoid assuming either that every older operator must be replaced or that an old installation can remain unchanged regardless of its condition.
Questions to ask before approving the work
Ask the installer to explain:
- Which operator is being recommended and its intended application.
- Where entrapment risks exist and how they will be addressed.
- Whether the gate structure needs changes.
- What manuals, operating instructions and testing records will be provided.
For an equipment discussion, start with ACJ’s gate operator information. If you’re dealing with a fault in an existing entrance, use the gate repair page and include the operator model and symptoms.