Company lists · Data refreshed September 2026
Top 25 Plastic electronic enclosure manufacturers based in the United States
RevenueBase identified 247 plastic electronic enclosure manufacturers headquartered in the United States as of September 2026 and tracks 4,930 professional contacts across them, including 1,094 with verified work emails. Houston is the largest hub.
This list covers plastic electronic 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 30, 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.
The 25 largest plastic electronic enclosure manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 453 contacts → | ||||
Indirect evidence “Mack Molding Co, headquartered in Arlington, VT, provides design through FDA-approved manufacturing services to the medical, commercial, computer & business equipment, energy and…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 191 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 30, 2026Thanks. The Data Team will review it. | |||||
| 3 | 152 contacts → | ||||
Strong evidence “We are an electrical enclosure manufacturer founded in 1963.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 4 | 128 contacts → | ||||
Partial evidence “Founded in 1962, C&J Industries has evolved into a premier all-in-one plastic injection molding company.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 119 contacts → | ||||
Partial evidence “Viking Plastics is a leading injection molding and value-added assembly service provider, delivering innovative products including sealing solutions, custom injection molding…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 6 | 118 contacts → | ||||
Indirect evidence “An accomplished custom injection molder and automated assembly company with more than four decades of proven success.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 7 | 97 contacts → | ||||
Indirect evidence “Founded in 1996, MUM Industries, Inc.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 82 contacts → | ||||
Partial evidence “Wisconsin Plastics Inc.(WPI) provides research and concept testing, design and development expertise, manufacturing and assembly solutions, storage and distribution capabilities…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 78 contacts → | ||||
Partial evidence “Dymotek Plastic Injection Molding: world class molding solutions right in CT!” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 77 contacts → | ||||
Strong evidence “IMS Companies, LLC is a diversified group of companies that are leading manufacturers of a wide range of products and solutions including a full line of enclosures and mounting…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 74 contacts → | ||||
Partial evidence “BEP is a manufacturer of injection molded, thermoformed and assembled products located near Grand Rapids, Michigan.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 73 contacts → | ||||
Partial evidence “NEMA Enclosures designs and fabricates custom UL-rated electrical and instrument enclosures built to your specifications and delivered on your schedule.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 64 contacts → | ||||
Indirect evidence “GARY Containers has been servicing the packaging needs of its customers since 1963.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 59 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 56 contacts → | ||||
Strong evidence “DDB Unlimited is an OEM NEMA Enclosure Manufacturer.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 54 contacts → | ||||
Partial evidence “Since 1967 Plaspros has been providing the plastics industry with high quality custom injection molding at an affordable price.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 54 contacts → | ||||
Indirect evidence “Ramko Injection is a company based out of Hemet, California, United States.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 18 | 52 contacts → | ||||
Partial evidence “Ambrit Engineering is a premier ISO 9001:2008 and ISO 13485:2003 Certified contract manufacturer for Healthcare, Aerospace, Commercial and Consumer products.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 52 contacts → | ||||
Strong evidence “Universal Plastics is a custom plastic products manufacturer with expertise in a range of processes, including custom thermoforming, injection molding (gas assist and structural…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 49 contacts → | ||||
Partial evidence “PM Plastics brings life to your vision!” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 47 contacts → | ||||
Indirect evidence “FusionDesign is a full service product development company located in Silicon Valley.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 47 contacts → | ||||
Indirect evidence “Founded in 1928, Bud Industries, Inc.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 44 contacts → | ||||
Partial evidence “Weco is a value-added, single-source, contract manufacturer of finished fabricated and machined metal components for product infrastructure and complete assemblies for products…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 44 contacts → | ||||
Indirect evidence “Indepak is a Custom Thermoforming company located in Portland, OR.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 25 | 39 contacts → | ||||
Partial evidence “Electromet provides comprehensive world class solutions in the field of electronic packaging products and precision metal components for naval, fixed and mobile installations.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: plastic electronic enclosure manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names plastic electronic enclosure manufacturers.
- Partial evidence
- Its own public description names part of plastic electronic enclosure manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name plastic electronic enclosure manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 247 plastic electronic enclosure manufacturers based in the United States
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Plastic electronic enclosure manufacturers based in the United States at a glance
As of Sep 30, 2026Companies by employee count
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 247 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 plastic electronic 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 “plastic electronic 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 plastic electronic 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 plastic electronic 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, 1,094 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 30, 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 plastic electronic 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 plastic electronic enclosure manufacturers are there based in the United States?
RevenueBase identified 247 plastic electronic 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?
Mack Molding Company, headquartered in Arlington, tops this list with the largest team on record.
Which city has the most plastic electronic enclosure manufacturers?
Houston leads with 4 headquartered companies, followed by Mentor (4) and Bridgeville (3).
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 1,094 verified decision-maker contacts tracked across these 247 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 30, 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.
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