Steeline Enclosures

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    UL Type 4 & 4X Mild Steel, Aluminum, 304 Stainless Steel, or 316L Stainless Steel Continuous hinge – Clamp Cover or 3- Point latch with Handle Wall Mount or FMD Wallmount Enclosure

    SW Series

    UL Type 4 & 4X Mild Steel, 304 Stainless Steel, or 316L Stainless Steel Concealed hinge – Quarter turn latch or 3- Point latch with Handle Wall Mount Enclosure

    SM Series

    The SM-Series floor mount enclosure mild steel/powder painted ANSI 61 Grey,304 stainless steel, or 316L stainless steel continuous hinge – 3-point latch with hanith and without flange mount disconnect cutout includes leg stand kit.

    SS Series

    UL Type 4 & 4X Mild Steel, 304 Stainless Steel, or 316L Stainless Steel Continuous hinge – 3- Point latch with Handle Freestanding or Freestanding with FMD Enclosure

    Value Added

    Design and build a custom enclosure solution to meet your needs and specifications. We offer special materials, dimensions, human interface, cutouts, holes, and paint with increased environmental ratings from Types 1 to 4X

    Sizing Your Enclosure

    Our customers rely on us for our engineering expertise and attention to quality. We are valued and create strong, long lasting relationships with our clients because they recognize our dependability, speed, flexibility and cost management options.


    Steeline was founded in 2000 in Dallas, Texas, and began designing and manufacturing steel enclosures to UL508, UL 50 and CSA requirements in a plant that includes 57,500 square feet completely dedicated to metal fabrication. We manufacture wall mount, floor mount, freestanding, and human/machine interface enclosures as well as climate-controlled units that protect electrical control equipment under many conditions.

    NEMA, first

    The National Electrical Manufacturers Association (NEMA) defines standards used in North America for various grades of electrical enclosures typically used in industrial applications. Each is rated to protect against personal access to hazardous parts, and additional type-dependent designated environmental conditions. A typical NEMA enclosure might be rated to provide protection against environmental hazards such as water, dust, oil or coolant or atmospheres containing corrosive agents such as acetylene or gasoline. A full list of NEMA enclosure types is available from the NEMA website.

    All of Steeline Enclosure products and steel enclosures are built to NEMA standard. By clicking one of the above links you will find a detailed list of what types of NEMA enclosures are available, and that Steeline Enclosures will custom build any sort of enclosure that you need specific to your exact requirements, no matter what kind of application your intended use.


    Define LxWxH – first.

    Not only will you need to measure and ensure the correct measurements, but you will also need to know the length, height, and width with all components within are mounted on a back panel. By doing this you have solved for the minimum internal dimensions of the enclosure. You can size now for any assumed heat dissipation that may occur within the enclosure. This is a major factor and should be considered as extremely important. Check that both external and internal dimensions are measured properly.

    Our enclosures are at work in the automotive industry, utilities, building automation, process controls and automation in factories. They house x-ray machines at borders for Homeland Security and are widely used in the food and beverage industry, pulp and paper, printing and publishing, energy, communications, textiles, wastewater treatment and the petrochemical industry.

    If you are looking for a steel enclosure to fit the needs of your business, we service all industries. Call us today and let us help you find the steel enclosure that suits your needs.

    For more information about our standard design platforms or the Steeline Modification and Design Program, see our products catalog or contact a member of our sales team.

    *Our team of experts are available to review and customize enclosure solutions to match your specific needs. If you do not see a system that filts your requirements, CONTACT US for a custom engineered system.