The Global Non-Metallic Enclosures Market was valued at USD 4.8 Billion in 2024 and is projected to reach USD 7.1 Billion by 2030, growing at a Compound Annual Growth Rate (CAGR) of 6.5% during the forecast period (2024–2030). This growth is being driven by increasing demand for corrosion-resistant, lightweight, and cost-effective protective solutions across industries such as telecommunications, industrial automation, and renewable energy.

As industries worldwide prioritize durability, operational efficiency, and sustainability, non-metallic enclosures from fiberglass and polycarbonate have become essential for protecting sensitive electronics and equipment. In this blog, we profile the Top 10 Companies in the Non-Metallic Enclosures Industry—leaders in material innovation, design, and application-specific solutions that are securing the backbone of modern infrastructure.

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🔟 1. Hammond Manufacturing

Headquarters: Guelph, Ontario, Canada
Key Offering: Junction boxes, instrument enclosures, handheld cases, wall-mount boxes

Hammond Manufacturing is a global leader in the design and manufacture of electronic enclosures, rack cabinets, and small cases. The company offers one of the industry’s broadest product lines, including a wide range of non-metallic enclosures that provide excellent resistance to impact, UV radiation, and harsh environmental conditions.

Innovation & Market Position:

• Extensive product portfolio with global distribution network

• Focus on NEMA and IP-rated enclosures for industrial and commercial applications

• Continuous investment in injection molding and material science R&D

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9️⃣ 2. Robroy Industries

Headquarters: Texas, USA
Key Offering: Fiberglass enclosures, corrosion-resistant products, explosion-proof solutions

Robroy Industries specializes in highly durable, corrosion-resistant fiberglass enclosures designed for the most demanding environments. Their products are widely used in chemical processing plants, water treatment facilities, and outdoor applications where metal enclosures would corrode quickly.

Innovation & Market Position:

• Decades of expertise in fiberglass reinforced plastic (FRP) technology

• Leadership in corrosion-resistant solutions for harsh industrial environments

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8️⃣ 3. Vynckier Enclosure Systems

Headquarters: Deerlijk, Belgium
Key Offering: Polycarbonate and ABS enclosures, terminal boxes, control cabinets

Vynckier Enclosure Systems, part of nVent Electric, is a prominent European manufacturer of non-metallic enclosures. The company provides innovative plastic enclosure solutions that meet international standards for safety, durability, and environmental protection.

Innovation & Market Position:

• Strong focus on customized enclosure solutions and fast delivery times

• Comprehensive range of products certified for use across Europe and globally

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7️⃣ 4. Allied Moulded Products, Inc.

Headquarters: Bryan, Ohio, USA
Key Offering: Fiberglass reinforced polyester (FRP) enclosures, NEMA-rated boxes

Allied Moulded Products is a leading manufacturer of fiberglass reinforced polyester enclosures known for their exceptional strength, durability, and corrosion resistance. The company specializes in moulded fiberglass products that withstand harsh environmental conditions while providing superior protection.

Innovation & Market Position:

• Pioneer in fiberglass reinforced polyester (FRP) enclosure technology

• Strong focus on customization and application-specific solutions

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6️⃣ 5. Phoenix EMS

Headquarters: San Jose, California, USA
Key Offering: Electronic enclosures, custom molding services, thermal management solutions

Phoenix EMS specializes in custom engineered solutions for electronic enclosures, focusing on both standard and highly customized non-metallic enclosures. The company serves diverse industries including medical devices, aerospace, and telecommunications with precision-molded plastic enclosures.

Innovation & Market Position:

• Expertise in custom injection molding and enclosure design services

• Focus on thermal management and EMI/RFI shielding solutions

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5️⃣ 6. Hubbell Incorporated

Headquarters: Shelton, Connecticut, USA
Key Offering: Non-metallic electrical enclosures, wiring devices, utility solutions

Hubbell Incorporated is a major manufacturer of electrical and electronic products, including a comprehensive line of non-metallic enclosures for commercial, industrial, and utility applications. Their enclosures are designed for safety, durability, and ease of installation.

Innovation & Market Position:

• Broad product portfolio serving multiple market segments

• Strong distribution network and brand recognition in electrical markets

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4️⃣ 7. Fibox Oy Ab

Headquarters: Helsinki, Finland
Key Offering: Polycarbonate enclosures, ABS boxes, waterproof electronic cases

Fibox Oy Ab is a leading European manufacturer of plastic enclosures, specializing in polycarbonate and ABS solutions for industrial electronics, telecommunications, and automation applications. The company is known for its high-quality, precision-engineered enclosure systems.

Innovation & Market Position:

• Extensive range of IP66, IP67, and IP68 rated enclosures

• Strong presence in European industrial automation markets

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3️⃣ 8. Omega Engineering

Headquarters: Norwalk, Connecticut, USA
Key Offering: Instrument enclosures, sensor housings, control boxes

Omega Engineering, part of Spectris plc, is a global leader in process measurement and control instrumentation. The company offers a comprehensive range of non-metallic enclosures designed to protect sensitive electronic equipment in various industrial environments.

Innovation & Market Position:

• Integration of enclosure solutions with comprehensive instrumentation offerings

• Strong technical support and customization capabilities

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2️⃣ 9. Scott Fetzer Company

Headquarters: Fairview, Ohio, USA
Key Offering: Electrical enclosures, specialty plastics, engineered products

Scott Fetzer Company, through its Electrical Group, manufactures a wide range of non-metallic electrical enclosures and related products. The company focuses on delivering high-quality, durable enclosure solutions for various industrial and commercial applications.

Innovation & Market Position:

• Diverse manufacturing capabilities across multiple material types

• Strong focus on quality control and product reliability

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1️⃣ 10. Arlington

Headquarters: Scranton, Pennsylvania, USA
Key Offering: Non-metallic electrical boxes, enclosures, connectivity solutions

Arlington, part of nVent Electric, is a leading manufacturer of non-metallic electrical enclosures and connectivity solutions. The company specializes in innovative products that provide safe, reliable protection for electrical connections in residential, commercial, and industrial settings.

Innovation & Market Position:

• Focus on innovative, easy-to-install enclosure solutions

• Strong presence in North American electrical distribution channels

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🌍 Outlook: The Future of Non-Metallic Enclosures Is Smarter and More Sustainable

The non-metallic enclosures market is undergoing significant transformation. While traditional applications continue to drive volume, the industry is increasingly focused on smart features, sustainability, and enhanced material properties that meet evolving market demands.

📈 Key Trends Shaping the Market:

• Growing adoption of recycled and bio-based polymers in enclosure manufacturing

• Integration of IoT capabilities and smart monitoring features in enclosures

• Increasing demand for UV-resistant and weatherable materials for outdoor applications

• Expansion into renewable energy sectors requiring specialized enclosure solutions

Get Full Report Here: Non-Metallic Enclosures Market – View in Detailed Research Report

The companies listed above are not only protecting critical infrastructure—they’re driving innovation in materials science and enclosure design that will define the future of industrial and commercial equipment protection.