Company lists · Data refreshed September 2026
Top 20 Bunker manufacturers based in the United States
RevenueBase identified 57 bunker manufacturers headquartered in the United States as of September 2026 and tracks 789 professional contacts across them, including 291 with verified work emails. Houston is the largest hub.
This list covers bunker 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 29, 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 20 largest bunker manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 188 contacts → | ||||
Indirect evidence “At RedGuard, you’ll never hear us say, “think outside the box,” because for us, it’s what’s inside that matters most.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 176 contacts → | ||||
Partial evidence “AT TANK CONNECTION, WE ENGINEER EXCELLENCE Tank Connection is the leading bolted tank manufacturer for factory coated bolted storage tanks and aluminum geodesic dome covers for…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 63 contacts → | ||||
Indirect evidence “Located in Bossier City, Louisiana, our facilities are spread out over 60 acres and include a square foot state-of-the-art shelter manufacturing plant, a fully-equipped square…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 22 contacts → | ||||
Partial evidence “Hall Tank manufactures and sells the finest tanks, all made to quality standards that are legendary in the industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 16 contacts → | ||||
Indirect evidence “Stanwade has nearly square feet of manufacturing space with the ability to build steel tanks up to gallons.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 12 contacts → | ||||
Indirect evidence “Everyday Hunter Onsite builds on a 20-plus-year reputation for delivering unparalleled quality and service.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 8 contacts → | ||||
Indirect evidence “TotalShield is the worldwide leader in blast resistant products.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 8 contacts → | ||||
Indirect evidence “Hallwood Modular is your one-stop-shop for Blast Resistant Buildings - Sales | Rentals | Site Services Hallwood Modular has the safest, most flexible rental fleet of Blast…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 7 contacts → | ||||
Indirect evidence “Atlas Survival Shelters is a construction company based out of 7407 Telegraph Rd, Montebello, California, United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 5 contacts → | ||||
Indirect evidence “FORTRESS is a new market offering that provides balanced protection for a full range of hazards - not just blast, but thermal, toxic (gas ingress), fragment, and extreme weather.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 3 contacts → | ||||
Indirect evidence “TelcoDen – New & Refurbished Concrete Shelters TelcoDen offers a wide selection of new and refurbished concrete shelters, with 100+ units in stock across a range of sizes.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 3 contacts → | ||||
Indirect evidence “We are at the forefront of Confidence.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 3 contacts → | ||||
Strong evidence “DEFCON Underground MFG manufactures and installs quality steel underground bunkers/shelters nationally for a variety of world threats.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 2 contacts → | ||||
Partial evidence “Zuma Bollards manufactures a wide range of bollards specifically designed to meet the needs of property owners, architects, and engineers looking for reliable solutions to create…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 2 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 2 contacts → | ||||
Indirect evidence “R.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1 contacts → | ||||
Partial evidence “Vault Pro USA is a premier manufacturer of premium quality American made safes, vault doors, safe rooms, storm shelters & tornado shelter doors and emergency escape hatches for…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1 contacts → | ||||
Indirect evidence “If you are looking to protect your car, recreational vehicle, boat, farm equipment, or anything else which needs protection from the harsh outdoor elements, then our wide…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1 contacts → | ||||
Partial evidence “We are a manufacturer of standard and custom built enclosures for backflow valves, gas lines, HVAC Units, Copper Piping, earthquake valves, and anything that needs to be secured.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 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: bunker 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 bunker manufacturers.
- Partial evidence
- Its own public description names part of bunker manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name bunker 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 20 of 57 bunker manufacturers based in the United States
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Bunker manufacturers based in the United States at a glance
As of Sep 29, 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 57 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 bunker 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 “bunker 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 bunker 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 bunker 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, 291 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 29, 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 bunker 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 bunker manufacturers are there based in the United States?
RevenueBase identified 57 bunker 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?
Redguard, headquartered in Wichita, tops this list with the largest team on record.
Which city has the most bunker manufacturers?
Houston leads with 3 headquartered companies, followed by Dallas (2) and Alma (1).
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 291 verified decision-maker contacts tracked across these 57 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 29, 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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