Nema Enclosures

• Designs and manufactures electrical enclosures for industrial applications.
• Builds both standard catalog products and fully custom enclosures.
• Supports projects ranging from one-off prototypes to larger production runs.
• Works to meet project specifications, required certifications and demanding timelines.

Materials and construction

• Powder-coated carbon steel enclosures.
• 304 stainless steel enclosures.
• 316 / 316L stainless steel enclosures.
• 5052 aluminum enclosures.
• Enclosures are engineered for harsh and demanding industrial environments.

Mission and vision

• Mission: To provide quality enclosure solutions, individualized for each customer.
• Vision: To exceed customer expectations by delivering superior products and services, fostering long-term partnerships, and continually innovating to meet evolving needs around the world.
• The company aims to be a premier custom enclosure solution provider for equipment protection globally.

Company history and growth

• Founded in 1987 by a NASA employee in a small rented warehouse in Houston, TX, initially serving a handful of customers with custom enclosures.
• Purchased in 2000 by Rob Bohn, under whose leadership the business grew into a leading custom make-to-order electrical enclosure manufacturer with a strong emphasis on third-party certification and customization.
• In 2013, Nema Enclosures became one of the first electrical enclosure manufacturers to launch an e‑commerce platform for ordering standard, made-to-order products online.
• In 2017, partnered with Vorne Industries to add custom washdown enclosures to the online catalog.
• In 2023, undertook a major website revamp and expanded the standard product catalog with new lines such as sloped-top enclosures, double door wall-mount enclosures, and disconnect enclosures, growing the catalog to nearly 1,500 products.
• In 2024, began expanding operations with a new facility featuring a state-of-the-art automated powder coat process to increase capacity and efficiency.

How Nema Enclosures works with customers

• Specializes in low volume, high mix, make-to-order work.
• Can support projects that require a single enclosure or many units.
• Provides estimating and engineering support, including design insights and help identifying potential obstacles.
• Offers both standard enclosure selection through an online catalog and fully custom solutions engineered to customer specifications.

• Cutouts and thru holes for mounting HMIs, operator devices and conduit entries.
• Gland plates on any or all four sides of an enclosure, with options available that maintain NEMA, IP, ATEX and IECEx ratings where indicated.
• Welded half or full couplings and racks.
• Enclosure body sunshields and/or roofs for additional environmental protection.

Interior hardware and mounting

• Customized panels that can include drilled and tapped holes, PEM nuts and studs.
• Adjustable inner doors or swing panels.
• Door-on-door enclosure configurations that allow HMI access without opening the main door.

Thermal and insulation options

• Insulation options with or without metal retainers, described as providing high R‑value per inch of thickness.

Door hardware and security

• A wide array of door closure and latching options, allowing different levels of security to match the application.

Finishing and appearance options

• Custom powder coating, including single- or dual-color applications.
• Anodizing of aluminum components, creating an oxide film for added scratch resistance and allowing a broad range of colors, from red or black to clear.
• Silk screening (screen printing) to add color, company names or logos for clear identification of enclosures.

These services are combined with the core design, fabrication and certification capabilities to deliver enclosures built around the customer's equipment and branding requirements.

• Customers can browse standard enclosure configurations using the online Enclosure Finder and advanced search tools.
• Standard products are made to order and can be added to the shopping cart and purchased through the website.
• Quote carts and quote requests are supported for customers who want pricing and configuration information before placing an order.

Custom projects and quotes

For custom enclosures or modified standard products:

• Customers can start a custom project by submitting their specifications and requirements online (for example, through the "Design A Box" and Request a Custom Quote flows) or by contacting the sales team directly.
• Nema Enclosures reviews project specifications, required certifications and installation environments to confirm the design is build‑ready and compliant.
• Detailed approval drawings are provided, and revisions are made as needed.
• Manufacturing begins after final customer sign‑off on the design.

Lead times and turnaround

• The home page highlights an average lead time of around one week for many projects.
• The company notes that by accepting orders directly from customers and using a proprietary ordering and sheet metal fabrication process, it can manufacture and ship a large variety of standard enclosures in as little as five days.

(For project‑specific lead times or commitments, customers should contact Nema Enclosures directly.)

New customer setup and documentation

The Resource Library lists several documents commonly requested by new or existing customers:

• Credit application for customers seeking credit terms.
• Credit card authorization form.
• Information to request the company's tax ID number (Form W‑9).
• Shipping options information.
• Terms and conditions information.
• Banking information available upon request.

For the latest versions or specific contractual and shipping terms, customers should refer to the documents provided directly by Nema Enclosures via the website or on request.

The company can provide enclosures with a range of ratings and third‑party approvals, including:

• NEMA enclosure ratings for different environmental conditions (examples on the site include NEMA 3R, 3RX, 4, 4X, 12 and 12K types).
• IP (Ingress Protection) ratings, with comparison charts available for download (examples include IP54, IP55, IP65 and IP66).
• UL Listed enclosures for various NEMA types (such as 1, 3R, 4, 4X, 12 and 12K), fabricated under UL oversight.
• C‑UL listed enclosures in compliance with Canadian standards such as C22.2 No. 14‑M95.
• ATEX enclosures for potentially explosive atmospheres in the European Union.
• IECEx enclosures for potentially explosive atmospheres in global markets outside the EU.

Where indicated on the site, certifications are written to allow flexibility in enclosure sizes, materials and options, and many common customization options are designed to maintain the relevant certifications.

Quality management

• Nema Enclosures operates under an ISO 9001:2015 quality management system.
• The company states a commitment to quality leadership and continual improvement in its products and processes.
• Quality checks are built into multiple stages of the manufacturing process.

Testing services

Nema Enclosures describes the use of inspection and testing steps, including non‑destructive testing (NDE) services such as:

• Lift testing.
• Dye penetrant inspections.

These services are used to help verify enclosure integrity where applicable.

Regulatory and trade compliance

The Resource Library describes several areas of regulatory and trade compliance support, including:

• Understanding and supporting regulations such as RoHS and REACH that affect products.
• Compliance with export and import laws of the United States and other countries where the company does business.
• Assistance with contractual and government requirements such as:
• Country of origin documentation.
• Harmonized tariff information.
• Free trade agreement documentation.
• Buy American qualification.
• Operation under a global ISO 9000 certificate framework.

Customer-accessible quality documents

From the Resource Library, customers can request or download items such as:

• ISO 9001:2015 certification information.
• UL certification information.
• RoHS and REACH certificates of compliance.
• Certificates of origin and related trade documentation.

Details and current versions of these documents are provided directly by Nema Enclosures on request or via the website resources.

• Phone: 713‑921‑2233
• Location: 1118 Pleasantville Dr, Houston, TX 77029, USA
• Manufacturing: Enclosures are manufactured in Texas.
• The site notes "Se Habla Español" for Spanish‑speaking customers.

How to get in touch

Customers can contact Nema Enclosures in several ways, as indicated on the website:

• By phone using the main contact number.
• Through the Contact Us form on the website.
• Through the Request a Custom Quote options for project‑specific inquiries.

When to contact Nema Enclosures directly

Customers should contact the company directly for:

• Project‑specific pricing.
• Confirmation of current lead times and delivery dates.
• Questions about certifications or ratings for a particular enclosure or installation.
• Detailed contractual terms, shipping terms or warranty information.
• Any questions that are not covered in the published resources and knowledge documents.

Chemical and petrochemical

• Enclosures manufactured for strength and durability in harsh chemical and petrochemical environments.
• Often built from Type 316 stainless steel for enhanced corrosion resistance.

Transportation / TxDOT

• Enclosures used to protect transportation-related equipment and controls.
• Designed to resist environmental exposure and corrosive substances commonly encountered in transportation and roadside applications.

Food and beverage

• NEMA-rated enclosures for food processing and similar facilities.
• Sloped-top designs help eliminate standing water on enclosure surfaces, supporting washdown and hygiene requirements.

Water treatment

• Electrical and instrument enclosures fabricated in powder-coated carbon steel, stainless steel or aluminum.
• Built to customer specifications and to meet project lead time needs.

Wastewater

• Weatherproof, corrosion-resistant enclosures for harsh wastewater environments.
• Focus on long-term protection of installed equipment.

Oil and gas (offshore and related applications)

• Enclosures available for Class I, Division II applications where purge systems are used, as described on the site.
• Can include appropriate cutouts for purge controllers, breathers and drainers typically required in these applications.

Power generation

• Strong, corrosion-resistant enclosures for a range of power generation applications.
• Solutions tailored to demanding operating conditions.

Fire protection

• Custom enclosures built to house CO₂ bottles and related equipment.
• Designs can include cradles and structural supports to accommodate weigh bars as part of fire suppression systems.

VSD / VFD applications

• Carbon steel enclosures for variable speed drive (VSD) and variable frequency drive (VFD) equipment.
• Designs emphasize management of heat buildup inside the enclosure.

Telecommunications

• Wall-mount and free-standing telecommunications enclosures.
• Engineered to protect wiring and electrical equipment and provide long-term reliable performance.

Project types

Across these industries, Nema Enclosures supports:

• New installations.
• Upgrades and retrofits.
• Prototypes and one-off solutions.
• Small production runs where configuration flexibility and certification are important.

• Over 4,000 existing NEMA enclosure models are available.
• Nearly 1,500 standard product listings span multiple product lines.
• Customers can browse and buy standard enclosures directly through the website using the Enclosure Finder and advanced search tools.
• Standard enclosures are made to order rather than stocked, with industry-focused turnaround times.

Typical enclosure types

Standard product families include (but are not limited to):

• Wall-mount enclosures.
• Free-standing and floor-mount enclosures.
• Junction box enclosures.
• Disconnect enclosures.
• Trough enclosures.
• ATEX/IECEx certified enclosure lines.

Custom enclosures

Nema Enclosures also engineers and fabricates fully custom enclosures when standard products are not an exact fit.

• Supports one-off prototypes as well as low-volume production runs.
• Designs can range from simple wall-mount boxes to complex multi-door, multi-compartment enclosures.
• Custom solutions can house electrical, electronic and pneumatic components.
• Custom designs are developed around the customer's equipment, installation environment, and required ratings/certifications.
• A dedicated online process (Design A Box) and custom quote workflow allow customers to submit specifications for review.

Materials offered

Enclosures are manufactured from:

• Powder-coated carbon steel.
• 5052 aluminum.
• 304 stainless steel.
• 316 / 316L stainless steel.

Material selection is matched to the application and environment requirements.

Ratings and third‑party certifications

Nema Enclosures manufactures environmentally rated industrial enclosures with a range of NEMA, IP and other third-party certifications, including:

• NEMA enclosure ratings (examples mentioned on the site include 3R, 3RX, 4, 4X, 12 and 12K types).
• IP (Ingress Protection) ratings (examples include IP54, IP55, IP65 and IP66).
• UL Listed enclosures for various NEMA types.
• C‑UL listed enclosures complying with Canadian standards.
• ATEX enclosures for explosive atmospheres in the EU.
• IECEx enclosures for explosive atmospheres in international markets.

The company emphasizes the ability to provide third-party certification for enclosures used globally.

Design and engineering support

• Engineering reviews customer specifications, certifications and installation environments to ensure designs are build‑ready and compliant.
• Customers receive approval drawings for review and sign‑off before manufacturing.
• Most common customization features (such as gland plates, view windows and door‑on‑door arrangements) are designed to maintain the applicable certifications, where stated on the website.

Ask anyway — the agent will say plainly that it is not published rather than guess.