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Introducing Dust-Tight Enclosures from Hoffman

Hoffman NEMA Type 9 Enclosures

Hoffman’s NEMA Type 9 enclosures are specifically designed to meet the rigors of hazardous environments where combustible dust may be present. This unique design makes the NEMA Type 9 enclosures ideal for applications like grain elevator systems, mining process controls, and drill rig systems.

NEMA Type 9 Wall Mount Enclosure Features

  • 19 inch (5 mm), 0.25 inch (6 mm) and 0.38 inch (10 mm) steel plate
  • Covers are 0.25 inches (6 mm) thick to allow mounting of NEMA 9 pushbuttons and pilot lights, which require threaded holes
  • Heavy duty cover hinges when the height (“A”) of the enclosure is 20.00 inches (508 mm) or more
  • Fiber gasket to insure dust-tight closure (mechanically attached to cover)
  • Weldnuts or collar studs provided for mounting optional panel
  • ANSI 61 gray polyester powder finish inside and out over pretreated surfaces.

In addition to NEMA Type 9 wall mount enclosures, Hoffman offers a full line of enclosures and purging/pressurization systems for hazardous locations. Not only does Hoffman provide standard catalog items but they also allow customization to meet each unique application.

Researching & Purchasing Hoffman Enclosures

Whether you’re navigating industry standards, researching specifications, or looking for pricing and availability on Hoffman enclosures, bisco industries is here to help. bisco industries is an authorized Hoffman distributor and offers online pricing and ordering for Hoffman NEMA 9 enclosures. Learn more at or contact one of our 48 local offices.

Hoffman Enclosures Offering New Double-Hinged Enclosures

new enclosures ideal for applications with limited space

Hoffman Enclosures is expanding its selection of standard enclosures to include double hinged cabinets which allow access from both the front and rear of the enclosure.  These access points are protected by a solid door on one side and a window door on the other. Hoffman’s PROTEK brand enclosures are UL and NEMA rated and are ideal for harsh environments where space is limited.

Key Features of Hoffman Enclosures’ PROTEK Double-Hinged Cabinets:

  • Three-part design: door, center section and wall section
  • Solid door provides complete physical and visual protection
  • Window door, made of scratch-resistant safety glass, allows visual monitoring while still protecting equipment
  • Enclosure sections are provided with ground studs to facilitate proper bonding and grounding
  • Door latches and keys included
  • Premium seamless gasket protects equipment from pollutants in the outside environment
  • One set of plated, self-grounding, tapped 10-32 rack angles per EIA universal spacing standards, which can be adjusted front-to-back, is provided with each center section of the cabinet; additional tapped- or square-hole rack angles can be added to the cabinet to provide additional mounting
  • Wall section welded panel studs which accommodate standard panels (steel and wood available), can be ordered separately

More solutions from hoffman enclosures

Hoffman Enclosures is a premier manufacturer of enclosures and accessories used to protect electronic systems and controls. Hoffman offers drop-in solutions like their PROTEK cabinets as well as custom solutions to meet the requirements of clients from the industrial, electronics, communications, and aerospace industries. Hoffman Enclosure’s partnership with bisco industries provides procurement teams with quick access to pricing and availability as well as product specifications.

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