FIRMS code

HAN4 Mercury Marine 01

Name: Mercury Marine 01
Address: 325 W Larsen Dr, Fond du Lac, WI, 54937-7102, US

Active Foreign trade zone

Facility details

FIRMS code: HAN4
Name: Mercury Marine 01
Address: 325 W Larsen Dr
Fond du Lac, WI 54937-7102
Status: Active (A)
Facility type: Foreign trade zone (02)
CBP port: Milwaukee, WI (3701)
CBP region: 3
Last changed: 2026-10-23
Data as of: 2026-10-23

Pre-filing validation

Validate HAN4 before you file

Check HAN4 against the port and use on your filing before ACE does: list, status, port (ACE 164) and facility type.

curl https://api.firmsapi.com/v1/validate \
  -H "x-api-key: $FIRMSAPI_KEY" -H "content-type: application/json" \
  -d '{"code":"HAN4","port":"3701","use":"ftz_admission"}'

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Nearby facilities in the same port

Code	Name	Type	Distance
HBC7	Mercury Marine 13	Foreign trade zone	663 m
HA25	Mercury Marine 05	Foreign trade zone	1.9 km
K351	Mercury Marine 07	Foreign trade zone	2.0 km
HA98	Mercury Marine 14	Foreign trade zone	2.4 km
I300	Mercury Marine 10	Foreign trade zone	11.1 km

Source: U.S. Customs and Border Protection FIRMS code list, data as of 2026-10-23. FIRMSapi is not affiliated with CBP; confirm bond status and filing details in ACE.