Verified Nov 2026
Other
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Since 1932
Senneca Holdings is a diversified holding company founded in 1932 and headquartered in Cincinnati, Ohio, though the record lists no confirmed HQ address, so location rests on the company description. It is privately held, with an estimated 1,000 to 5,000 employees and estimated revenue of $100 million to $250 million. The company serves automotive, electric vehicle, renewable energy, and industrial equipment markets through subsidiaries that make specialty doors, data center enclosures, and separation solutions. In 2025 it opened a research and manufacturing hub in Ho Chi Minh City through its Subzero Engineering unit.
Senneca Holdings at a glance
Revenue
$100-250M
Est. band
Employees
1,000-5,000
Founded
1932
Certifications
ISO 14001 · ISO 45001 · ISO 9001
Import activity
168
Industries
Automotive
Electric Vehicles
Renewable Energy
Industrial Equipment
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
168
Named foreign suppliers
28
Top origins
China · South Korea · Vietnam · Netherlands
Shared foreign counterparties do not establish that these companies buy from Senneca Holdings.
What this tells a buyer
No customs shipment data is on file, and the most recent reported development is a 2026 industrial lease finalized for a 67,000-square-foot facility in Frederick, Maryland.
The company holds ISO 9001, ISO 14001, and ISO 45001 certifications and produces traffic doors, glass doors, data center enclosures, and specialty doors for commercial and industrial customers.
Senneca operates as a parent company to several recognized door and separation brands in North America and Europe, and it is privately held with no public ticker.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & active
94 years in operation (founded 1932).
Holds ISO 14001, ISO 45001, ISO 9001 certification(s) per public sources.
Overview
Senneca Holdings is a diversified holding company founded in 1932 and headquartered in Cincinnati, Ohio, though the record lists no confirmed HQ address, so location rests on the company description. It is privately held, with an estimated 1,000 to 5,000 employees and estimated revenue of $100 million to $250 million. The company serves automotive, electric vehicle, renewable energy, and industrial equipment markets through subsidiaries that make specialty doors, data center enclosures, and separation solutions. In 2025 it opened a research and manufacturing hub in Ho Chi Minh City through its Subzero Engineering unit.
At a glance
Attribute | Detail |
|---|---|
Founded | 1932 |
Employees | 1,000-5,000 |
Revenue | $100-250M (estimated) |
Certifications | ISO 14001 · ISO 45001 · ISO 9001 |
What Senneca Holdings makes
The company holds ISO 9001, ISO 14001, and ISO 45001 certifications and produces traffic doors, glass doors, data center enclosures, and specialty doors for commercial and industrial customers.
Certifications
Senneca Holdings is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
ISO 14001 — hiringcafe.com
ISO 45001 — hiringcafe.com
ISO 9001 — hiringcafe.com
Trade and customs footprint
No customs shipment data is on file, and the most recent reported development is a 2026 industrial lease finalized for a 67,000-square-foot facility in Frederick, Maryland. US customs bill-of-lading records list 168 inbound shipments across 28 foreign suppliers, with top origins including China · South Korea · Vietnam · Netherlands.
Latest developments
2026-09-03 — Colliers Finalizes 67K-SF Industrial Lease for Senneca Holdings in Frederick, Maryland | CRE Market Beat (cremarketbeat.com)
2026-08-07 — FF30 Four-Fold Door — Washington Township Fire Station 41 - Senneca (senneca.com)
2026-08-05 — Major Expansion - Senneca (senneca.com)
2026-06-07 — Sundays with Senneca Holdings: Welcoming Our New CEO, Michael Quinn | Senneca Holdings (linkedin.com)
2025-11-25 — @Subzero Engineering opens a sustainable R&D and manufacturing hub in Ho Chi Minh City, strengthening Asia Pacific reach. | Senneca Holdings (linkedin.com)
2025-03-20 — Senneca Unveils Dynamic New Website Showcasing Industry Leadership - Senneca (senneca.com)
Facilities
Public sources reference the following locations:
Frederick, Maryland — hiringcafe.com
Company details
Senneca operates as a parent company to several recognized door and separation brands in North America and Europe, and it is privately held with no public ticker. Senneca Holdings was founded in 1932, and has an estimated 1,000-5,000 employees. On the LightSource stability read it is rated "Established & active": 94 years in operation (founded 1932). Holds ISO 14001, ISO 45001, ISO 9001 certification(s) per public sources.
Frequently asked questions
What does Senneca Holdings do?
Senneca Holdings is a diversified holding company founded in 1932 and headquartered in Cincinnati, Ohio, though the record lists no confirmed HQ address, so location rests on the company description. It is privately held, with an estimated 1,000 to 5,000 employees and estimated revenue of $100 million to $250 million. The company serves automotive, electric vehicle, renewable energy, and industrial equipment markets through subsidiaries that make specialty doors, data center enclosures, and separation solutions. In 2025 it opened a research and manufacturing hub in Ho Chi Minh City through its Subzero Engineering unit.
When was Senneca Holdings founded?
Senneca Holdings was founded in 1932.
How big is Senneca Holdings?
Senneca Holdings has an estimated 1,000-5,000 employees, with revenue in the $100-250M range (estimated).
What certifications does Senneca Holdings hold?
Senneca Holdings lists ISO 14001 · ISO 45001 · ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
Does Senneca Holdings import from overseas suppliers?
US customs bill-of-lading records show 168 inbound shipments for Senneca Holdings, with top origins including China · South Korea · Vietnam · Netherlands.
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Last verified Nov 2026. Is this your company? Request a correction.
Location & contact
Phone
+1 800-543-4455
Certification
ISO 14001 · ISO 45001 · ISO 9001
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