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Gray iron FS-type electrical box with lug brackets, 18 cu in capacity

Killark

Killark FS-1M Weatherproof Electrical Box 18 cu in Gray

SKU CH-6T5K-90VD2

Weatherproof single-gang iron box with 18 cu in capacity, lug brackets and CSA/UL listing

  • Product typeElectrical Boxes & Covers
  • 18 cu in capacity fits more conductors
  • Gray iron construction resists corrosion outdoors
  • Single-gang FS box mounts on surface lugs
  • UL listed and CSA certified for safety
  • Weatherproof design protects wiring in wet locations

Single-gang FS box for weatherproof wiring

The Killark FS-1M is a single-gang FS-type electrical box rated at 18 cu in capacity. It is built from iron with a gray finish and carries CSA and UL Listed certifications. The unit suits installers who need a code-compliant enclosure for damp or wet locations.

Check conduit entry and mounting surface

Verify that your conduit layout matches the lug bracket style on this box. Confirm the 18 cu in volume meets fill calculations for the conductors and devices you plan to install. Ensure the mounting surface can support an iron enclosure and that local code accepts the listed standards.

Iron construction with lug brackets for surface

The iron body resists impact and corrosion in outdoor or industrial settings. Lug brackets allow direct surface attachment without additional straps. The gray coating provides a neutral appearance that blends with most exteriors. The box is new and ready for installation.

How it compares

Measured against everything we stock in Electrical Enclosures & Cabinets, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 68% of the 1,411 comparable items (median $39.99).

Specifications

Product
Brand nameHUBBELL KILLARK
Product typeElectrical Boxes & Covers

Questions about this item

Does the Killark FS-1M box include a cover or gasket, or must they be purchased separately?

The Killark FS-1M is supplied as the 18 cu in iron box with lug brackets only; covers and gaskets are sold separately.

The listing shows a single 18 cu in capacity — how do I know if that volume suits my wiring?

The 18 cu in rating follows NEC box-fill rules; count each conductor, clamp and device yoke to confirm the total stays within that volume.

What does the UL Listed and CSA marking mean when the box is installed outdoors?

UL Listed and CSA certify the gray iron enclosure for wet locations when paired with a listed weatherproof cover and proper mounting.

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