Company lists · Data refreshed September 2026

Top 25 Insulated glass unit manufacturers worldwide

Name: Insulated glass unit manufacturers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 4,805 companies tracked

RevenueBase identified 4,805 insulated glass unit manufacturers worldwide as of September 2026 and tracks 68,609 professional contacts across them, including 16,476 with verified work emails and 0 with mobile numbers. The United Kingdom is the largest market and Sao Paulo the largest hub.

This list covers insulated glass unit manufacturers worldwide, 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 17, 2026. Country and city lists for insulated glass unit manufacturers follow the table.

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 17, 2026 86% judged on-target in blind review

4,805Companies

68,609Contacts tracked

16,476Verified emails

0Mobile numbers

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The 25 largest insulated glass unit manufacturers worldwide

Ranked by team size

Top 25 of 4,805 insulated glass unit manufacturers worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to insulated glass unit 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Guardian Industries	Indirect evidence	Auburn Hills, MI, United StatesHQ checked Sep 17, 2026	5,001-10,000	3,633 contacts →
	Indirect evidence “Guardian Industries, a global company headquartered in Auburn Hills, Michigan, operates facilities throughout North and South America, Europe, Africa, the Middle East, and Asia.” Source: RevenueBase Database · checked Sep 17, 2026
2	Asahi India Glass Limited AIS	Partial evidence	Gurgaon, IndiaHQ checked Sep 17, 2026	5,001-10,000	3,057 contacts →
	Partial evidence “AIS is India’s leading integrated glass solutions company and a dominant player in the car glass segment commanding over 75% of the Indian market.” Source: RevenueBase Database · checked Sep 17, 2026
3	Oldcastle Buildingenvelope	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 17, 2026	5,001-10,000	1,860 contacts →
	Indirect evidence “At Oldcastle BuildingEnvelope® (OBE), we believe the work of our employees truly matters.” Source: RevenueBase Database · checked Sep 17, 2026
4	Pilkington United Kingdom Limited	Partial evidence	Lancashire, United KingdomHQ checked Sep 17, 2026	501-1,000	1,805 contacts →
	Partial evidence “Pilkington United Kingdom Limited, part of the NSG Group, is one of the global leaders in glass and glazing technology.” Source: RevenueBase Database · checked Sep 17, 2026
5	Trulite Glass & Aluminum Solutions	Partial evidence	Peachtree City, GA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,184 contacts →
	Partial evidence “TRULITE GLASS & ALUMINUM SOLUTIONS is one of North America's largest architectural glass and aluminum fabricators and distributors.” Source: RevenueBase Database · checked Sep 17, 2026
6	AGP Group	Partial evidence	Ghent, BelgiumHQ checked Sep 17, 2026	1,001-5,000	847 contacts →
	Partial evidence “AGP Group is one of the world’s leading glazing manufacturers.” Source: RevenueBase Database · checked Sep 17, 2026
7	Viracon	Indirect evidence	Owatonna, MN, United StatesHQ checked Sep 17, 2026	1,001-5,000	648 contacts →
	Indirect evidence “Viracon is part of Apogee Enterprises, Inc.(NASDAQ: APOG) and is headquartered in Owatonna, Minnesota, From aesthetics to strict environmental and energy specifications, to…” Source: RevenueBase Database · checked Sep 17, 2026
8	Odl, INC	Strong evidence	Zeeland, MI, United StatesHQ checked Sep 17, 2026	1,001-5,000	523 contacts →
	Strong evidence “Driven by continual innovation and trusted customer partnerships, ODL is a visionary building products leader delivering a full breadth of high-quality door and insulated glass…” Source: RevenueBase Database · checked Sep 17, 2026
9	AGC Glass Company North America	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 17, 2026	1,001-5,000	487 contacts →
	Strong evidence “AGC Glass is one of the largest manufacturers of glass and glass-related products in North America, offering a broad range of glazing solutions for commercial, residential…” Source: RevenueBase Database · checked Sep 17, 2026
10	Binswanger Glass	Partial evidence	Memphis, TN, United StatesHQ checked Sep 17, 2026	501-1,000	441 contacts →
	Partial evidence “For over 150 years, Binswanger Glass has shaped the built environment with award-winning architectural glazing solutions.” Source: RevenueBase Database · checked Sep 17, 2026
11	YKK AP America INC	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 17, 2026	1,001-5,000	427 contacts →
	Partial evidence “YKK AP America is the North American arm of the global YKK AP Group-an innovation-driven, award-winning manufacturer of commercial façade systems and residential windows and doors.” Source: RevenueBase Database · checked Sep 17, 2026
12	Technical Glass & Aluminium Co. L.L.C	Partial evidence	Dubai, United Arab EmiratesHQ checked Sep 17, 2026	1,001-5,000	366 contacts →
	Partial evidence “Technical Glass & Aluminium Company L.L.C.(TGAC) has constantly grown since our establishment in 1989.” Source: RevenueBase Database · checked Sep 17, 2026
13	CETIH	Indirect evidence	Machecoul (44), FranceHQ checked Sep 17, 2026	1,001-5,000	334 contacts →
	Indirect evidence “CETIH's activity focuses on the housing envelope : Entrance doors : CETIH is leader and specialist in entrance doors for family homes in France (Aluminium, Aluminium / Wood…” Source: RevenueBase Database · checked Sep 17, 2026
14	Hartung Glass Industries	Partial evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	501-1,000	333 contacts →
	Partial evidence “Hartung Glass Industries is one of the fastest growing, most dynamic, total service glass companies in North America.” Source: RevenueBase Database · checked Sep 17, 2026
15	Viridian Glass Australia	Partial evidence	Ingleburn, AustraliaHQ checked Sep 17, 2026	501-1,000	331 contacts →
	Partial evidence “For over 165 years we’ve been shaping the way our customers think about glass, from being just a functional building product to something that adds value to homes, buildings and…” Source: RevenueBase Database · checked Sep 17, 2026
16	Glaston Corporation	Partial evidence	Helsinki, FinlandHQ checked Sep 17, 2026	501-1,000	315 contacts →
	Partial evidence “Glaston is the glass processing industry’s innovative technology leader, supplying equipment, services and solutions to the architectural, automotive and solar industries.” Source: RevenueBase Database · checked Sep 17, 2026
17	VEKA	Partial evidence	Fombell, PA, United StatesHQ checked Sep 17, 2026	201-500	278 contacts →
	Partial evidence “About VEKA North America VEKA North America is a leading manufacturer of high-quality PVC window and door systems, proudly serving residential and commercial markets across the…” Source: RevenueBase Database · checked Sep 17, 2026
18	Apogee Enterprises, INC	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 17, 2026	5,001-10,000	275 contacts →
	Indirect evidence “By definition, Apogee means "highest point." It's no coincidence that it's also the name of our company.” Source: RevenueBase Database · checked Sep 17, 2026
19	Press Glass Holding SA	Partial evidence	Konopiska, PolandHQ checked Sep 17, 2026	1,001-5,000	265 contacts →
	Partial evidence “We process glass for the construction in Europe.” Source: RevenueBase Database · checked Sep 17, 2026
20	Finstral	Indirect evidence	Unterinn/ritten, ItalyHQ checked Sep 17, 2026	1,001-5,000	248 contacts →
	Indirect evidence “Based in South Tyrol, Italy, Finstral is held by the Oberrauch family, who founded the company in 1969.” Source: RevenueBase Database · checked Sep 17, 2026
21	4b AG	Indirect evidence	Hochdorf, SwitzerlandHQ checked Sep 17, 2026	501-1,000	246 contacts →
	Indirect evidence “Wir sind ein auf Fenster, Türen und Fassaden spezialisiertes Unternehmen mit Hauptsitz im Herzen der Schweiz.” Source: RevenueBase Database · checked Sep 17, 2026
22	Art-N-Glass INC	Partial evidence	New Delhi, IndiaHQ checked Sep 17, 2026	51-200	245 contacts →
	Partial evidence “ART-N-GLASS INCORPORATED With over 37 years of experience, ART-N-GLASS INC is the most comprehensive and technologically advanced glass processor in India.” Source: RevenueBase Database · checked Sep 17, 2026
23	Metro Performance Glass	Partial evidence	Auckland, New ZealandHQ checked Sep 17, 2026	1,001-5,000	233 contacts →
	Partial evidence “Metro Performance Glass (MPG) is one of Australasia’s leading glass suppliers and has been in operation for more than 30 years.” Source: RevenueBase Database · checked Sep 17, 2026
24	Europen	Indirect evidence	Eskişehir, TürkiyeHQ checked Sep 17, 2026	1,001-5,000	225 contacts →
	Indirect evidence “Eskişehir Organize Sanayi Bölgesi'nde m² kapalı toplam m² açık alan üzerinde kurulu çağdaş ve modern tesislerinde, yılda ton EUROPEN markalı PVC pencere profilleri üretimi…” Source: RevenueBase Database · checked Sep 17, 2026
25	Lumon España	Indirect evidence	Málaga, United StatesHQ checked Sep 17, 2026	501-1,000	218 contacts →
	Indirect evidence “Lumon es una empresa multinacional especializada en la venta, fabricación e instalación de cortinas de cristal sin perfiles para fachadas con terrazas, barandillas y porches.” Source: RevenueBase Database · checked Sep 17, 2026

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: insulated glass unit 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 insulated glass unit manufacturers.
Partial evidence: Its own public description names part of insulated glass unit manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name insulated glass unit 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 4,805 insulated glass unit manufacturers worldwide

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Insulated glass unit manufacturers worldwide at a glance

As of Sep 17, 2026

24.0%Verified-email coverage

14.3Average contacts per company

11-50Median size (employees)

1.5%Largest-city concentration · Sao Paulo

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,759

11-50

1,724

51-200

847

201-500

232

501-1,000

1,001-5,000

5,001-10,000

10001+

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 insulated glass unit 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.
Coverage: 28 countries, largest first: the United Kingdom, the United States, Germany, Brazil, Italy, India, the Netherlands, Canada, Türkiye, Spain and 18 more. Country and city lists for insulated glass unit manufacturers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “insulated glass unit 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 insulated glass unit 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 insulated glass unit manufacturers, and records with no verified work email.
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, 16,476 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 17, 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.

Insulated glass unit manufacturers by location

28 lists · largest first

Every Insulated glass unit manufacturers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 insulated glass unit 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 insulated glass unit manufacturers are there worldwide?

RevenueBase identified 4,805 insulated glass unit manufacturers worldwide 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?

Guardian Industries, headquartered in Auburn Hills, tops this list with the largest team on record.

Which country has the most insulated glass unit manufacturers?

The United Kingdom leads with 655 companies, followed by the United States (519) and Germany (514). Every insulated glass unit manufacturers list by country and city is linked on this page.

Which city has the most insulated glass unit manufacturers?

Sao Paulo leads with 74 headquartered companies, followed by London (56) and Istanbul (38).

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 16,476 verified decision-maker contacts tracked across these 4,805 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 17, 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.