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This section provides an overview for pull boxes as well as their applications and principles. Also, please take a look at the list of 16 pull box manufacturers and their company rankings. Here are the top-ranked pull box companies as of January, 2025: 1.Gibson Stainless & Specialty, Inc., 2.Jensen Precast, 3.States Manufacturing Corporation.
Table of Contents
Engaged in research on nitride semiconductor growth using the MBE method at Waseda University Graduate School. After graduating from graduate school in 2016, he joined a non-ferrous metal manufacturer.
Engaged in equipment maintenance and engineering work at metal smelting plants. Moved to a chemical manufacturer in 2022. Engaging in similar tasks.
Pull Boxes are box-shaped components used to protect wiring and circuit connections.
Generally installed outdoors, they protect wiring and circuits from rainwater and dust. Pull Boxes also have ventilation holes to prevent overheating and rainwater from filling the box. Pull Boxes are provided with holes for wiring, allowing wiring to be neatly organized.
They are also used not only to protect wiring and circuits, but also to enhance safety. The rule that wires must not be connected to each other in a conduit is stipulated in the technical standards for electrical equipment. If you want to branch a power supply, you must protect the connection with a Pull Box or similar device.
There is a similar product called an outlet box, the size of which is determined by the JIS standard, but there is no JIS standard for pull boxes. Therefore, a wide variety of sizes can be selected according to the installation location.
Pull Boxes are used to protect wiring and circuit connections. The purpose is to protect wiring and circuit connections from the outside environment. In outdoor locations, water and moisture can cause circuits to short-circuit.
Pull Boxes can be used to prevent and protect against rainwater intrusion. They may also be used to connect electrical equipment and wiring. In many cases, wiring in large factories is thicker than recommended to account for voltage drops.
Since this may not fit into the lead boxes of electrical equipment, etc., a pull box may be installed in front of the box to connect it to the thinner wiring. In addition, devices such as breakers and terminal blocks may be housed in the box.
Pull Boxes are box-like structures that house wiring and circuits and are designed to be impervious to external influences. Ventilation holes are provided for wiring connections, ventilation, and water drainage.
The main functions of Pull Boxes are to protect and organize wiring. Wiring can be damaged by the external environment or can suffer poor contact due to human manipulation. Pull Boxes protect wiring by encasing it in a box-like structure and preventing external influences.
In some cases, terminal blocks are provided to accommodate the wiring, and products are also available that make it easy to make wiring connections. Pull Boxes are also useful for organizing wiring.
If multiple wires are routed in a messy manner, they may rub against each other. Pull Boxes can be used to organize and safely manage wiring.
There are two types of Pull Boxes, plastic and metal, and they are used according to the environment of the location where you want to install them.
Resin pull boxes are made of FRP resin or polyvinyl chloride resin. They are weak against direct sunlight, so they are not suitable for outdoor locations with strong sunlight. Compared to metal objects, there is no risk of rust or corrosion. Used indoors or in corrosive environments.
Iron and stainless steel are used for metal. In the case of iron, it is often plated with hot-dip zinc or the like. It is characterized by its high impact resistance and sturdiness.
Compared to resin, it also has superior heat resistance, making it suitable for areas exposed to strong sunlight. However, iron may rust or corrode, making it unsuitable for seaside or hot spring areas where there is a lot of water. It also has the disadvantage of allowing electricity to pass through in case of leakage.
When selecting a pull box, pay attention to the material and size.
Select a material that is suitable for the environment in which it will be used. For corrosive environments, it is preferable to use stainless steel or resin. However, in general environments or indoors, inexpensive steel should be selected.
Select the size according to the number of incoming wires and wire thickness. It is desirable to select a slightly larger product because there is a possibility that additional installation work may be performed at a later date. If a smaller size is selected, the wires may rub against the inside of the product.
Paint color and body color should be selected to match the surroundings and to be inconspicuous. Depending on the application, a product with a terminal block may be selected.
*Including some distributors, etc.
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Jensen Precast was established in 1968 and is based in Sparks, Nevada as a manufacturer and supplier of precast concrete products. The product’s product portfolio includes utility vaults, stormwater management systems, retaining walls, septic tanks, and more. The precast concrete products offered by the company are crucial components in civil engineering and construction projects, enabling durable and sustainable structures. The products are used in various sectors such as transportation, energy, water, and telecommunications. It is suitable for multiple purposes, from underground installation to above-ground application.
States Manufacturing Corporation, located in Champlin, MN, has been a manufacturer of custom electrical and metal products since 1924. The company produces low-voltage and high-voltage equipment, such as termination cabinets, metal-clad switch gears, pad mount primary meterings, and enclosed switch gears for the food processing, traffic management, power production, metal fabrication, and audio equipment industries. The company also provides services, such as equipment retrofits, engineering, and painting for the finishing process.
Holocom, Inc., in Tempe, AZ, established in 1994, is a manufacturer of protective distribution system (PDS) solutions for classified networks transmitting sensitive data. The company’s products are enclosures, alarm systems, secure raceways, and special application security products such as pull boxes, communication enclosures, user drop boxes, and splitter boxes used in feral agencies, military, and networks such as JWICS and SIPRNet. The company offers certification training, installation, engineering, and service warranties.
Selco Manufacturing Corp. was founded in 1907 and is a custom niche manufacturer of products used to build and maintain vital infrastructure. The company is based in West Caldwell, New Jersey. This company provides services such as custom fabrication, DC power distribution, electrified transit, electrical enclosures, cable trays and fittings, and steel security bollards. Their projects encompass a wide range of infrastructure areas, including bridges and roads, rail transit facilities, 3D rail tracks, industrial and utilities, flood protection, as well as cast iron and cast aluminum junction boxes.
Vulcan Spring and Mfg. Co. has been a manufacturer of custom springs and assemblies since 1967, based in Telford, PA, USA. The company provides springs for various industries, including aerospace, automotive, medical, and retail displays. Their machinery and engineering expertise provides custom solutions that meet the most challenging applications. They are a USA-based, ISO-certified supplier. They are also SMI certified, Thomas verified suppliers, and a PMA member. Vulcan has global recognition from Tier 1 OEMs, design firms, and contract manufacturers. They also distribute steel strapping, seals, and tools to meet industrial bundling requirements.
Gibson Stainless was founded in 1995 and is headquartered in Greensburg, Pennsylvania. The company is a distributor of electrical fittings, and complete conduit systems in Type 316 SS for industries such as food & beverage, marine, infrastructure, chemical processing, and wastewater treatment and attempts to source as many components as possible from the United States from domestic manufacturers. Most of the company’s product offerings are stainless steel. Product categories include hubs, connectors, clamps, conduit components, anchors, and other fittings.
Hope Electrical Products Co., Inc., established in 1933 and based in West Caldwell, New Jersey, is a supplier of electrical, NEMA-rated, industrial, and UL-listed products. The company’s products include an American-made line of boxes that are used in many industrial, commercial, and infrastructure projects, including surface or flush-mounted weatherproof junction boxes for airtight, watertight, dust-tight, or submersible applications. The products are made from iron, aluminum, and stainless steel materials. The company also manufactures custom NEMA 4, 4X, and 6P enclosures and explosion housings for use in the public sector.
KDM is a Chinese manufacturer and supplier of steel enclosures that was established in 2006 in Wuxi, Jiangsu. The company produces various outdoor and indoor enclosures, including control panel, telecom, and battery configuration models. It also offers merchandise displays, point-of-purchase and point-of-sale (POP/POS) materials, and retail fixtures such as racks and shelves. KDM products are mainly used by clients in the industrial and retail sectors, as well as in the telecommunication and energy industries.
Oldcastle Infrastructure, Inc. was established in 1978 and is a manufacturer and supplier of building materials and products for infrastructure projects based in Atlanta, Georgia, United States. The company manufactures concrete pipes, residential meter boxes, and structural wall panels used in applications such as stormwater management, data centers, and liquid containment vaults. These products are sold under various trade names, including Nutrient Separating Baffle Box, Cell Blocks, and OneLift Pump Station.
Locke Solutions, established in 2013 and headquartered in Houston, Texas, is a manufacturer of precast concrete and fabricated metal products tailored for the engineering and construction industries. The company specializes in the creation of underground precast concrete solutions, serving the energy, utility, and municipal markets. Its product line includes concrete spread footings, electrical pull boxes, wide precast trenches (ABT XHD Former System), electric utility trenches, precast equipment foundation pads, and more.
N.J. Sullivan Co., Inc. (NJSC) is a private manufacturer of electrical construction equipment based in Dulles, Virginia. Established in 1958, the company transitioned from a small machine shop to a specialized producer of bolted pressure switches, junction boxes, bussed troughs, and electrical enclosures for use in data centers, electronics, utilities, and construction. The company offers various services to its clients, including metal fabrication and finishing, precision sheet metal machining, and powder coating. NJSC operates out of a 52,000-square-foot facility and chiefly serves the military, defense, and aerospace industries along with large contractors and Fortune 500 companies.
Wise Engineering Fabrication and Sourcing Group, founded in 2017, is a manufacturer and designer of custom outdoor and indoor enclosure products in Queens, NY, USA. The company’s custom products include pull boxes, metal deck plates, light pole fixtures, crown boxes, deck sleeves, and junction boxes used in sewers, wastewater management, industrial, agriculture, and power industries. The company offers metal laser cutting and bending services for sheet metal materials such as mild steel, aluminum, brass, stainless steel, and alloys.
McLean Parts is a distributor of industrial equipment and replacement components in Indianapolis, Indiana, USA, and was founded in 1977. The company distributes filter fans, heat exchangers, condenser trays, rear panels, and air conditioner systems. It also offers thermoelectric coolers, refrigeration components, mounting adapter plates, filter box fans, and accessories, including junction boxes, filters, heater units, lowers, and deflectors that are used in the energy, power, and industrial sectors. The company is an authorized nVent Hoffman dealer of their products.
Ranking as of January 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Gibson Stainless & Specialty, Inc. |
17.1%
|
| 2 | Jensen Precast |
15.7%
|
| 3 | States Manufacturing Corporation |
11.4%
|
| 4 | Selco Manufacturing Corp. |
11.4%
|
| 5 | Vulcan Spring & Mfg. Co. |
8.6%
|
| 6 | Wise Engineering Fabrication and Sourcing Group |
7.1%
|
| 7 | Pure Plastics & Metals, Inc. |
5.7%
|
| 8 | Holocom, Inc. |
4.3%
|
| 9 | N.J. Sullivan Co., Inc. |
4.3%
|
| 10 | SHEN FANG ENTERPRISES CO., LTD |
2.9%
|
Derivation Method
The ranking is calculated based on the click share within the pull box page as of January 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
8 | 72.7% |
|
China
|
1 | 9.1% |
Japan
|
1 | 9.1% |
Taiwan
|
1 | 9.1% |
58 products found
58 products
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■Features - IP68 highly waterproof plastic box that can withstand submersion at a depth of 1 meter for 24 hours. - Made of ASA resin that is resist...
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We aim for better functionality and safety by increasing impact resistance and weather resistance.
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■Box salt damage resistant weather resistant waterproof ・Resin box ARCA (Arca) ・Made of polycarbonate ・Door type weatherproof waterproof box ・IP66
