EFab (eFab) Steel City Boxes — what procurement buyers should know
EFab (often shown as eFab in manufacturer materials) refers to the prefabricated electrical box and assembly offering sold through the Steel City/ABB product family. These products are built from welded, pre‑galvanized or galvanized steel and are commonly configured as 4" square outlet/switch boxes with factory‑installed features such as #12 AWG solid ground wire pigtails, metal‑stud or conduit brackets, and specific knockout patterns.
What EFab is known for
- Prefabrication and standardization: eFab is positioned as a configurator and preassembly system that lets contractors and specifiers create consistent in‑wall rough‑in assemblies delivered ready for installation.
- Steel City components: EFab assemblies use Steel City metallic boxes and accessories, a long‑standing product family in commercial construction.
- Purpose‑built boxes: variations include multiple depths, welded construction and options for armored cable clamps or conduit use.
Main product families and features
- 4‑inch square welded boxes in several depths and cubic capacities.
- Factory grounding: preinstalled #12 AWG solid ground pigtails or ground bumps.
- Brackets and mounting: metal‑stud, vertical, floor‑mount T and CV flush brackets.
- Knockouts and clamps: eccentric or standard knockouts with optional armored‑cable clamps.
- Prefab assemblies and online configurator services for project delivery.
Common applications
New commercial buildouts, institutional and healthcare projects, data centers, multiunit residential developments and conduit/MC cable installations where consistent box placement and reduced rough‑in labor produce measurable cost savings.
How to identify EFab models and match replacements
- Match the full manufacturer catalog number (not just the short title) and UPC where available.
- Confirm depth and cubic‑inch capacity for conductor fill.
- Verify grounding method (factory pigtail length and AWG versus ground bump).
- Check mounting bracket style and knockout/clamp configuration.
- Use manufacturer sales drawings and distributor spec sheets to validate fit.
Sourcing and procurement best practices
- Order by full catalog number and manufacturer brand (Steel City / eFab by ABB).
- Request sales drawings and spec sheets to verify conductor fill and mounting details.
- For larger projects, consider eFab prefab assemblies to reduce on‑site labor and simplify logistics.
- Confirm applicable listings and code requirements from product data before specifying.
How Safsale helps buyers
- Listings include titles, images and specification bullets useful for pre‑screening parts.
- Product images and multiple views help visually confirm bracket style and pigtail presence.
- Safsale buyers can use the model number on the product page to request manufacturer drawings and distributor spec PDFs to finalize procurement decisions.
Bottom line: EFab/eFab denotes the Steel City pre‑fabrication approach and specific welded steel box SKUs that save installation labor and improve consistency. When replacing or specifying EFab boxes, procurement professionals should match catalog numbers, cubic capacity, depth, bracket type and grounding details and validate those items against manufacturer drawings and distributor spec sheets.
