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Milbank ANSI 61 Gray G90 Galvanized Steel Lay-In Wireway
Model: MIL-P472122
Milbank ANSI 61 Gray G90 Galvanized Steel Lay-In WirewayThe Milbank ANSI 61 Gray G90 Galvanized Steel Lay-In Wireway is a family of code-ready raceway sections engineered to organize and protect...
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Milbank 4424-GSC1-NK ANSI 61 Gray Polyester Powder Coated G90 Galvanized Steel Lay-In Wireway, 24-Inch x 4-Inch x 4-Inch
Model: MIL-4424-GSC1-NK
Milbank 4424-GSC1-NK ANSI 61 Gray Polyester Powder Coated G90 Galvanized Steel Lay-In Wireway, 24-Inch x 4-Inch x 4-InchThe Milbank 4424-GSC1-NK is an ANSI 61 Gray polyester powder coated, G90...
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Milbank GSC1 Series ANSI 61 Gray Powder-Coated Steel Lay-In Wireway
Milbank's GSC1 Series Lay-In Wireway is a factory-finished steel wireway system engineered to organize, route, and protect electrical conductors and cables within commercial and industrial power distribution systems. This family of straight wireway sections is constructed from Galvanized Steel and finished in an ANSI 61 Gray polyester powder coat, giving contractors a durable, corrosion-resistant enclosure for wiring runs above panelboards, switchgear, and motor control centers. The GSC1 Series is available in cross-section and length combinations ranging from 4-Inch x 4-Inch x 36-Inch Long up through 12-Inch x 12-Inch x 36-Inch Long, so contractors can select the section size that matches conductor fill and routing requirements for a given project. Every section in the family shares the same lay-in trough design, Galvanized Steel construction, and Polyester Powder Coated ANSI 61 Gray finish, allowing a consistent, professionally finished appearance across an entire wireway run.
Key Features
- Size Range: Available from 4-Inch x 4-Inch x 36-Inch Long through 12-Inch x 12-Inch x 36-Inch Long, with intermediate 6-Inch x 6-Inch, 8-Inch x 8-Inch, and 10-Inch x 10-Inch cross-sections in multiple lengths to match conductor volume and routing needs.
- Durable Construction: Fabricated from Galvanized Steel for strength and corrosion resistance in demanding electrical distribution environments.
- Finish: Polyester Powder Coated ANSI 61 Gray finish provides a durable, attractive, corrosion-resistant surface that stands up to daily industrial use.
- Lay-In Configuration: Lay-in wireway design allows conductors to be laid directly into the trough section rather than pulled through, easing installation and simplifying future wiring changes.
- Straight Section Layout: Configured as straight wireway sections that can be combined with elbows, tees, and additional straight sections to route conductors through complex layouts.
- Modular Section Design: Designed to connect with compatible wireway sections and fittings to build extended raceway runs for conductor routing across a facility.
- Multiple Size Options: Offered across 13 cross-section and length combinations so contractors can standardize on the GSC1 Series for both small control circuits and larger feeder runs.
Technical Specifications
- Product Finish: Polyester Powder Coated
- Product Material: Galvanized Steel
Typical Applications
- Commercial and Industrial Electrical Distribution
- Conductor and Cable Routing in Panel Rooms
- Motor Control Center Wiring Organization
- Above Panelboard and Switchgear Cable Management
- Utility and Metering Equipment Rooms
- New Construction and Retrofit Wiring Projects
Why Milbank?
Milbank is a recognized manufacturer of steel electrical enclosures and distribution equipment, and the GSC1 Series Lay-In Wireway reflects that focus on durable, code-compliant construction. Built from Galvanized Steel and finished with a Polyester Powder Coated ANSI 61 Gray coating, this wireway family is designed to provide long-lasting protection for conductors across a wide range of section sizes in demanding commercial and industrial electrical environments. With a factory-applied finish and heavy-gauge steel body available in sizes from 4-Inch x 4-Inch up through 12-Inch x 12-Inch, contractors can select the right GSC1 Series section for a clean, organized, and code-compliant wiring installation from day one. Choosing Milbank helps ensure organized, reliable conductor routing that stands up to daily use in professional installations.
Manufacturer Resources
Product Specs
- Product Type:
- Wireway
- Product Finish:
- Polyester Powder Coated
- Configuration:
- 36-Inch x 12-Inch x 12-Inch
- Department:
- Electrical
- Product Subgroup:
- Wireway
- list_batch:
- MIL-20260917
- Product Material:
- Galvanized Steel
- Product Color:
- Gray
- Product Group:
- Conduit & Raceway
Milbank 6624-GSC1-NK – Frequently Asked Questions
1) What cross-section sizes and lengths does the Milbank GSC1 lay-in wireway come in?
Thirteen cross-section and length combinations, all straight sections: 4 x 4 x 36 inch; 6 x 6 in 12, 24, 36 and 60 inch lengths; 8 x 8 in 36, 48 and 60 inch; 10 x 10 in 24, 36 and 72 inch; and 12 x 12 in 12 and 36 inch. Pick the cross-section by conductor fill and the length by the run you have to cover between fittings.
2) Is the GSC1 wireway lay-in or feed-through? Can I drop conductors in instead of pulling them?
It's a lay-in trough design, so the cover comes off and conductors lay straight into the body rather than being pulled end to end. That matters on retrofits and on panel rooms where wiring gets changed: you reopen the trough and add or move a conductor without re-pulling the whole run.
3) If the wireway run is outdoors or exposed to weather, is the Milbank GSC1 the right choice?
The Milbank GSC1 Series is a lay-in straight section in galvanized steel with a polyester powder coated ANSI 61 Gray finish, described for commercial and industrial distribution work such as routing above panelboards, switchgear, and motor control centers. For a weather-exposed run, the Square D RDB Series Square-Duct is specified as a NEMA 3R raintight wireway in 16-gauge steel, which is the rating normally called for in that location.
4) What is the closest galvanized steel lay-in wireway equivalent to the Milbank 6636-GSC1-NK 6-inch x 6-inch x 36-inch section?
The Milbank GSC1 Series 6-Inch x 6-Inch x 36-Inch Long section, part number 6636-GSC1-NK, is a galvanized steel lay-in straight trough finished in polyester powder coated ANSI 61 Gray. The nearest cross-brand counterpart is the Hoffman Econotrough wireway trough, HOF-F6636RTG, also galvanized steel and also a 36-inch length. Both are straight trough sections intended to be built up with fittings into a longer run; the Milbank carries the factory ANSI 61 Gray powder coat, while the Hoffman is catalogued in the Econotrough series.
5) What is the GSC1 wireway made of and what is the finish?
Galvanized steel body with a polyester powder coat in ANSI 61 gray. The galvanizing plus powder coat is what makes it suitable for indoor commercial and industrial distribution rooms, and the ANSI 61 gray matches the standard gray used on panelboards and switchgear so a run above the gear looks consistent.
6) Can I build a full wireway run with elbows and tees out of these GSC1 sections?
Yes. These are straight sections meant to be combined with elbows, tees and more straight lengths to route conductors through a layout, so you order the straight footage here and add the fittings for direction changes. Order the straight runs by length rather than cutting: the family covers 12 inch up to 72 inch sections depending on cross-section.
7) What size wireway should I use above a panelboard, 4x4 or 8x8?
Size it by conductor fill and bend space, not by the shortest path. A 4 x 4 x 36 inch section handles small control circuit gutters and a handful of branch conductors; 8 x 8 and 10 x 10 are what you want where feeders or a large group of circuits converge above a panelboard or switchgear, because you need room to lay conductors in without crowding the trough. The GSC1 family runs 4 x 4 through 12 x 12 so you can standardize on one series for both.
8) How do I order the right Milbank GSC1 part number?
The part number encodes the size: the first digits are the cross-section, the next the length, followed by -GSC1-NK. So 6 x 6 x 36 inch is 6636-GSC1-NK, 8 x 8 x 60 inch is 8860-GSC1-NK, and 12 x 12 x 36 inch is 121236-GSC1-NK. Specify cross-section and length together, since not every length is offered in every cross-section.
9) What should be used instead of a Milbank GSC1 section when the cover needs to stay attached to the trough?
The Milbank GSC1 Series is a lay-in trough design in which conductors are laid directly into the section rather than pulled through. Where a hinged cover is preferred so the cover stays captive on the trough, the Square D Square-Duct wireway, SQU-LDB45, is specified with a hinged cover and a NEMA 1 rating.
10) For a NEMA 1 indoor wireway run, how does the Milbank GSC1 compare to Square D Square-Duct?
Both are steel wireway systems for indoor conductor routing. The Square D Square-Duct LDB45 is a NEMA 1 wireway with a hinged cover. The Milbank GSC1 Series is a lay-in straight section in galvanized steel with a polyester powder coated ANSI 61 Gray finish, offered in square cross-sections from 4-Inch x 4-Inch up to 12-Inch x 12-Inch so the section can be sized to conductor fill, and built out with elbows, tees, and additional straight sections.
11) I need a hinged cover so I can open the duct without removing screws. Does the GSC1 have one?
The GSC1 is described as a lay-in trough with removable cover sections, not as a hinged-cover duct. If a hinged cover is what the spec calls for, the Square D Square-Duct LDB45 hinged cover wireway is a NEMA 1 option built for that.
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Does the Milbank 6624-GSC1-NK come with a warranty?
Absolutely. The Milbank 6624-GSC1-NK is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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