What J. E. Berkowitz, LP does

J. E. Berkowitz, LP (doing business as Jeber Kowitz) is a third-generation, family-owned architectural glass fabricator founded in 1920 in the Philadelphia metropolitan region and now headquartered in Pedricktown, New Jersey. The company operates a 200,000 square foot state-of-the-art manufacturing facility on a 23-acre campus, employing over 250 skilled personnel, and serves architects, glazing contractors, construction professionals, and — to a lesser extent — residential homeowners across both domestic and international markets. Its product portfolio spans eight core categories: heat-treated glass, Winduo™ insulating glass units, interior glass, JEB laminated glass (including SentryGlas® Expressions™ and Fusion™), JEB Invisiwall point-supported glass systems, JEB Edge™ all-glass entrances, Enviroscreen™ silk-screened glass, and Envirospan™ spandrel glass.

Manufacturing is built around three horizontal tempering ovens, three automated vertical insulating lines, CNC fabrication machinery with laser-guided precision, on-line roller-coated ceramic frit application, and on-line argon gas filling with warm-edge spacer technology. The facility is ISO 9001 certified, and products meet ASTM C1036/C1048/C1172/E2190, ANSI Z97.1, CPSC 16 CFR 1201, SGCC, IGCC, IGMA, GANA, CAN/CGBS12.1 M, and EN 14179-1:2005 standards, with Miami-Dade Product Control Notice of Acceptance for its PVB and SentryGlas® interlayers.

The business model is one-time B2B sale of custom-fabricated architectural glass, with quote-based pricing determined by project specifications rather than published rates. Go-to-market is enterprise field sales — direct engagement with architects and glazing contractors from design through delivery, supported by in-house engineering, estimating, and hardware integration. Revenue mechanics are project-driven and inherently cyclical with commercial construction activity; pricing is not transparent publicly. Marketing is concentrated in content/SEO-driven blog publishing authored primarily by Amos Pfeffer, covering glass manufacturing trends, LEED certification, and product education; the company has no disclosed funding, no M&A activity, no public partnerships, and no parent company structure.

Name

J. E. Berkowitz, LP

Legal name

J. E. Berkowitz, LP

Website

https://jeberkowitz.com

Company type

Private

Founded year

1920

Operating status

Operating

Headcount range

251–500 employees

Short description

J. E. Berkowitz, LP (DBA Jeber Kowitz) is a third-generation, family-owned architectural glass fabricator producing custom heat-treated, insulating, laminated, silk-screened, spandrel, and point-supported glass for architects, glazing contractors, and construction projects across domestic and international markets.

Ownership category

akta.pro rank

Product category

Architectural Glass Fabrication

NAICS

Glass Product Manufacturing Made of Purchased Glass (327215), Glass and Glass Product Manufacturing (32721)

SIC

Glass Products, Made Of Purchased Glass (3231)

akta.pro primary industry

Glass Fabrication & Processing Services (Cutting/Edging/Drilling/Polishing) (IMADAHAI)

akta.pro secondary industries

Tempered & Heat-Strengthened Safety Glass (IMADAHAD), Decorative, Patterned & Privacy Glass (Frosted/Textured/Colored) (IMADAHAG), Low‑E, Solar Control & Energy-Efficient Coated Glass (IMADAHAF)

Keywords

• Architectural glass fabrication
• Tempered glass products
• Insulating glass units
• Laminated glass manufacturing
• Glass entrance systems

Headquarters

HQ city

Pedricktown

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Infrastructure, Technology or R&D

Revenue model

1. Architectural Glass Fabrication Products: The company generates revenue through manufacturing and selling architectural glass products including insulating glass, heat-treated glass, silkscreen and spandrel glass, laminated glass, all-glass doors and entrances, point-supported glass systems and canopies. Products are sold directly to architects, glazing contractors, and the construction industry with bespoke solutions for construction projects.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

J. E. Berkowitz, LP manufactures and fabricates architectural glass products for the construction industry, including heat-treated glass, insulating glass units, laminated glass, silk-screened glass, spandrel glass, all-glass entrance systems, and point-supported glass systems. The company provides custom fabrication with in-house capabilities spanning cutting, edging, drilling, notching, and assembly, serving architects, glazing contractors, and the construction sector with project-specific engineered solutions.

Product overview

J. E. Berkowitz, LP is an architectural glass fabricator offering a comprehensive portfolio of glass products and systems for the construction industry. The company operates as a single unified product line with specialized product categories including Heat-Treated Glass (Temperfect™ tempered and heat-strengthened), Winduo™ Insulating Glass Units, Interior Glass solutions, JEB Laminated Glass (including SentryGlas® Expressions™ and Fusion™), JEB Invisiwall Point Supported Glass Systems, JEB Edge™ All Glass Entrances, Enviroscreen™ Silk-Screened Glass, and Envirospan™ Spandrel Glass. These products cater to both domestic and international markets, serving architects, glazing contractors, and builders with complete project packages including glass, hardware, shop drawings, and engineering support.

Differentiator

Problem solved

Functional benefit

Products and services

• Heat-Treated Glass

Quantifiable outcome

• Products meet stringent industry standards including ASTM C1036, C1048, C1172, C1279, C1651, E2190, ANSI Z97.1, CPSC 16 CFR 1201, CAN/CGBS12.1 M, and SGCC/IGCC/IGMA certifications

Named customers4 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• NSG Group (Pilkington): Global float and architectural glass manufacturer selling under the Pilkington brand, producing heat-treated, insulating, laminated, and coated glass for commercial and residential construction. Overlaps with J.E. Berkowitz in architectural value-added glass, though NSG operates at much broader global scale.
• Saint-Gobain Glass: Global glass manufacturer producing flat, coated, laminated, and fabricated architectural glass products under multiple brands. Competitor across heat-treated, insulating, and decorative glass SKUs, though Saint-Gobain operates as a broad incumbent with global scale and a much wider product portfolio.
• AGC Glass North America: North American arm of global glass manufacturer AGC, producing architectural flat glass, coated glass, and fabricated insulating and laminated products. Comparable in architectural glass SKUs but operates at substantially larger scale and broader portfolio than J.E. Berkowitz.
• Oldcastle BuildingEnvelope (OBE): Large North American supplier of architectural glass, framing systems, and curtain wall solutions for commercial construction. Overlaps with J.E. Berkowitz on fabricated architectural glass SKUs but operates as a broad incumbent offering a much wider envelope portfolio beyond specialty glass fabrication.

Direct peers

• Guardian Glass: Global manufacturer of float, coated, and fabricated architectural glass serving commercial and residential construction with high-performance insulating and laminated products. Overlaps with J.E. Berkowitz in heat-treated and insulating glass SKUs supplied to architects and glazing contractors, though at significantly larger scale.
• Cardinal Glass Industries: Privately held US-based glass manufacturer producing fabricated architectural glass including insulating glass units, laminated glass, and heat-treated products for residential and commercial construction. Comparable to J.E. Berkowitz as a vertically integrated fabricator of value-added architectural glass SKUs.
• Glasswerks: US architectural glass fabricator offering tempered, insulating, laminated, silk-screened, and decorative glass products to the commercial construction industry. Comparable as a specialty fabricator serving architects and glazing contractors with overlapping value-added glass SKUs.
• Garibaldi Glass Industries: North American architectural glass fabricator offering tempered, insulating, laminated, silk-screened, and point-supported glass systems. Direct competitor to J.E. Berkowitz across nearly all of its proprietary product lines, including silk-screened spandrel and all-glass entrances.
• Trulite Glass & Aluminum Solutions: US-based architectural glass and aluminum fabricator producing tempered, insulating, laminated, and decorative glass for commercial storefronts and façades. Closely comparable as a specialty architectural fabricator serving the same glazing contractor and architect customer base with a similar product portfolio.
• Vitro Architectural Glass: Major North American architectural glass manufacturer and fabricator producing float, coated, and fabricated architectural glass for commercial construction. Directly comparable as a producer of heat-treated, insulating, and laminated glass supplied to glazing contractors and architects, though at substantially larger scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/j--e--berkowitz-lp

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about J. E. Berkowitz, LP