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The O-Z/GEDNEY FSS-1-50 is a single-gang rectangular electrical device box constructed from iron with an aluminum enamel and zinc-electroplated finish. It accepts 1/2-inch knockout trade size entries and is rated for non-weather-resistant indoor applications. The gray iron body provides the mechanical durability needed for standard device mounting in commercial and industrial electrical installations. This box is designed for use by licensed electricians installing switches, receptacles, and similar wiring devices in conduit-fed systems. It meets multiple recognized standards including UL 514A and CSA C22.2 No. 18, confirming its suitability for code-compliant work.
This device box is suited for single-gang device installations in commercial, industrial, and residential settings where a rigid metal enclosure is required. Typical applications include flush or surface-mounted switch and outlet installations in conduit systems. The 1/2-inch knockout sizing accommodates standard trade conduit and fittings commonly used in EMT and rigid conduit runs. Its non-weather-resistant rating limits use to dry or protected interior locations only.
Designed as an OEM-style replacement and standard fit for single-gang device box applications in conduit-fed electrical systems using 1/2-inch trade size fittings.
Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize all circuits before beginning any box installation or device wiring. This box is rated for non-weather-resistant indoor use only and must not be installed in wet or outdoor locations without an appropriately rated enclosure. Standard electrician hand tools and conduit fittings are required for proper knockout entry and box mounting.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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