Company lists · Data refreshed September 2026

Top 25 Telecommunications enclosure manufacturers based in the United States

RevenueBase identified 197 telecommunications enclosure manufacturers headquartered in the United States as of September 2026 and tracks 6,863 professional contacts across them, including 1,786 with verified work emails. Houston is the largest hub.

This list covers telecommunications enclosure manufacturers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review
197Companies
6,863Contacts tracked
1,786Verified emails
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The 25 largest telecommunications enclosure manufacturers based in the United States

Ranked by team size
Top 25 of 197 telecommunications enclosure manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunications enclosure manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceKnoxville, TN, United StatesHQ checked Sep 19, 20261,001-5,000983 contacts →

Partial evidence

“About Orbia Connectivity Solutions (Dura-Line) Orbia’s Connectivity Solutions business, Dura-Line, is a leading manufacturer and distributor of high-density polyethylene (HDPE)…”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceSchaumburg, IL, United StatesHQ checked Sep 19, 2026501-1,000918 contacts →

Indirect evidence

“Rittal LLC is the U.S.”

Source: RevenueBase Database · checked Sep 19, 2026
3Partial evidenceSimi Valley, CA, United StatesHQ checked Sep 19, 20261,001-5,000430 contacts →

Partial evidence

“Chatsworth Products (CPI) is a 100% employee-owned, global manufacturer of ICT infrastructure solutions that power and protect critical technology investments-from data centers…”

Source: RevenueBase Database · checked Sep 19, 2026
4Indirect evidenceSchaumburg, IL, United StatesHQ checked Sep 19, 2026501-1,000301 contacts →

Indirect evidence

“Charles Industries, LLC is a diversified manufacturing and technology company serving Wireline, Wireless, Broadband Cable/MSO, Utilities (Energy), and Industrial markets.”

Source: RevenueBase Database · checked Sep 19, 2026
5Partial evidenceAllenton, WI, United StatesHQ checked Sep 19, 2026501-1,000273 contacts →

Partial evidence

“At Maysteel, we support supply chain and procurement leaders with scalable fabrication solutions for data centers and critical infrastructure, including custom enclosures, server…”

Source: RevenueBase Database · checked Sep 19, 2026
6Strong evidenceCleveland, OH, United StatesHQ checked Sep 19, 202651-200240 contacts →

Strong evidence

“ADALET, a Marmon IEI / Berkshire Hathaway company, is a leading manufacturer of explosionproof enclosures and systems, custom aluminum castings, industrial sheet metal and…”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceRockwall, TX, United StatesHQ checked Sep 19, 2026501-1,000210 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
8Partial evidenceBryan, OH, United StatesHQ checked Sep 19, 2026201-500191 contacts →

Partial evidence

“Allied Moulded Products, Inc.(Allied Moulded) is the Contractor’s Choice of nonmetallic electrical boxes and enclosures in today's residential, commercial and industrial markets.”

Source: RevenueBase Database · checked Sep 19, 2026
9Indirect evidenceOrlando, FL, United StatesHQ checked Sep 19, 2026201-500172 contacts →

Indirect evidence

“We are a leading provider of IT and telecom infrastructure technologies.”

Source: RevenueBase Database · checked Sep 19, 2026
10Indirect evidenceKingsport, TN, United StatesHQ checked Sep 19, 202651-200152 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
11Strong evidenceSaginaw, MI, United StatesHQ checked Sep 19, 2026201-500152 contacts →

Strong evidence

“We are an electrical enclosure manufacturer founded in 1963.”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidenceSalt Lake City, UT, United StatesHQ checked Sep 19, 202651-200129 contacts →

Indirect evidence

“Subzero ensures a superior customer experience by applying unique product designs, quick turnaround engineering, and in-house installation teams.”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceElk Point, SD, United StatesHQ checked Sep 19, 2026501-1,000100 contacts →

Indirect evidence

“Thermo Bond Buildings, located in the heart of the Midwest, is in its fourth decade of delivering advanced infrastructure solutions for the world’s most demanding industries.”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceMentor, OH, United StatesHQ checked Sep 19, 202651-20097 contacts →

Indirect evidence

“Founded in 1996, MUM Industries, Inc.”

Source: RevenueBase Database · checked Sep 19, 2026
15Indirect evidenceSpokane Valley, WA, United StatesHQ checked Sep 19, 20265,001-10,00074 contacts →

Indirect evidence

“Purcell Systems Inc.”

Source: RevenueBase Database · checked Sep 19, 2026
16Partial evidenceStrafford, MO, United StatesHQ checked Sep 19, 2026201-50065 contacts →

Partial evidence

“Diversified manufacturer.”

Source: RevenueBase Database · checked Sep 19, 2026
17Partial evidenceChatsworth, CA, United StatesHQ checked Sep 19, 2026201-50063 contacts →

Partial evidence

“Since 1966, Armorcast Products Company has been the innovative leader in supplying the utility industry with secure and protective enclosures.”

Source: RevenueBase Database · checked Sep 19, 2026
18Partial evidenceHuffman, TX, United StatesHQ checked Sep 19, 202651-20056 contacts →

Partial evidence

“Modular Building Fabrication & Integration Electrical Equipment Manufacturing Custom Fabrication & Enclosures

Source: RevenueBase Database · checked Sep 19, 2026
19Strong evidencePauls Valley, OK, United StatesHQ checked Sep 19, 2026201-50056 contacts →

Strong evidence

“DDB Unlimited is an OEM NEMA Enclosure Manufacturer.”

Source: RevenueBase Database · checked Sep 19, 2026
20Strong evidenceRiverside, CA, United StatesHQ checked Sep 19, 202651-20053 contacts →

Strong evidence

“Headquartered in Riverside, CA, NewBasis is a manufacturer of below ground enclosures (handholes) for telecommunication, CATV, electrical, light traffic, lighting and industrial…”

Source: RevenueBase Database · checked Sep 19, 2026
21Partial evidenceFarmingdale, NY, United StatesHQ checked Sep 19, 2026n/a51 contacts →

Partial evidence

“Legrand Cabinet and Containment (CCB) is a leading manufacturer of cabinet and containment platforms designed to meet the needs of your unique application.”

Source: RevenueBase Database · checked Sep 19, 2026
22Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 19, 202651-20047 contacts →

Indirect evidence

“General Devices offers the industry's most complete selection of telescoping slides, cabinets, accessories, and electronic packaging hardware as well as being a custom precision…”

Source: RevenueBase Database · checked Sep 19, 2026
23Indirect evidenceWilloughby, OH, United StatesHQ checked Sep 19, 202651-20047 contacts →

Indirect evidence

“Founded in 1928, Bud Industries, Inc.”

Source: RevenueBase Database · checked Sep 19, 2026
24Indirect evidenceReno, NV, United StatesHQ checked Sep 19, 202651-20040 contacts →

Indirect evidence

“Enconnex is a global data center and IT infrastructure solutions company known for developing innovative custom solutions, as well as a variety of data center products including…”

Source: RevenueBase Database · checked Sep 19, 2026
25Partial evidenceEdinboro, PA, United StatesHQ checked Sep 19, 202651-20038 contacts →

Partial evidence

“Great Lakes Data Racks & Cabinets is a USA based (COO-USA), woman owned, ISO 9001:2015 registered metal manufacturer.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 197 telecommunications enclosure manufacturers based in the United States

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Telecommunications enclosure manufacturers based in the United States at a glance

As of Sep 19, 2026
26.0%Verified-email coverage
34.8Average contacts per company
11-50Median size (employees)
3.0%Largest-city concentration · Houston
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
44
11-50
79
51-200
48
201-500
12
501-1,000
8
1,001-5,000
3
5,001-10,000
1
10001+
2

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 197 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among telecommunications enclosure manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “telecommunications enclosure manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names telecommunications enclosure manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among telecommunications enclosure manufacturers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 1,786 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names telecommunications enclosure manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many telecommunications enclosure manufacturers are there based in the United States?

RevenueBase identified 197 telecommunications enclosure manufacturers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Dura-Line, headquartered in Oo, tops this list with the largest team on record.

Which city has the most telecommunications enclosure manufacturers?

Houston leads with 6 headquartered companies, followed by Dallas (4) and Miami (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,786 verified decision-maker contacts tracked across these 197 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.