Best Sigma Electric in 2026

Supports runs of AC, MC or FMC

For aluminum or steel 14/2 - 10/2 AC and MC, and 3/8-in FMC

Zinc-plated steel construction

Supports 3/4-in EMT conduit

Meets National Electric Code (NEC) standards

Snap-on type for easy installation

Provide a junction for conduits or can house a single wired device such as a receptacle or switch

Used to mount up to a single lampholder with 1/2-in knockout

Connects bare wire to copper or steel water pipe or tubing

For pipe or copper rod sizes 1/2-in thru 1-in, wire range #10 - #2, and rebar range 5/8-in thru 3/4-in

Copper alloy construction with zinc-plated steel screws

Blank weatherproof covers are used to cover boxes not in use or junction boxes

Terminates 1/2-in EMT conduit to a 1/2-in knockout in an outlet box or enclosure

Set screw type with a tri-combo screw

Concrete-tight when taped and for dry location applications

Provide a junction for conduits or can house a single wired device such as a receptacle or switch

Features three 1/2-in knockouts and 18. 3 cu. in. capacity

Includes mounting lugs, closure plugs and a pre-installed ground screw

Provide a junction for conduits or can house up to two wired devices such as receptacles or switches

Supports 1/2-in EMT conduit

Meets National Electric Code (NEC) standards

Snap-on type for easy installation

Provide a junction for conduits or can be used to mount lampholders and lighting systems

Features five 1/2-in knockouts and 16 cu. in. capacity

Includes mounting lugs, closure plugs and a pre-installed ground screw

Blank weatherproof covers are used to cover boxes not in use or junction boxes

Compliments 4-in. round weatherproof boxes installed in wet, damp or dry locations

Stamped steel construction and powder coated for corrosion resistance

Provides weatherproof protection for two outdoor duplex receptacles

Compliments 2-gang weatherproof boxes installed in wet, damp or dry locations

Features a self-closing lids to prevent moisture penetration when receptacles are not in use

Protects wire against sharp edges of AC and FMC

For aluminum or steel 14/2, 14/3 and 12/2 AC and 5/16-in FMC

Actual #0 trade size is equivalent to 5/16-in

Provides weatherproof protection for 1-gang outdoor applications

Compliments a horizontally installed duplex receptacle and box in a wet, damp or dry location

Features self-closing lids to prevent moisture penetration when receptacle is not in use

Weatherproof lampholder used for outdoor security or aesthetic applications with an adjustable head to illuminate desired area

Lamps use PAR38 bulbs (150 Watt max. ) and are compatible with most LED, incandescent or CFL bulbs (bulbs not included)

Flexible installation options allow the light to be activated by a switch, or with a motion or dusk-to-dawn sensor to fit your lighting needs

Connects two lengths of 1/2-in EMT conduit

Set screw type with tri-combo screws

Concrete-tight when taped and for dry location applications

Provides weatherproof protection for an outdoor 20/50 Amp receptacle.

For one 2.125-inch diameter outlet mounted in a 2-gang weatherproof box

Features a self-closing lid to prevent moisture penetration when receptacle is not in use

Provides weatherproof protection for 1-gang outdoor applications

Compliments a horizontally installed GFCI receptacle and box in a wet, damp or dry location

Features a self-closing lid to prevent moisture penetration when receptacle is not in use

Round replacement gasket

Used in conjunction with 4-in. round weatherproof boxes and covers

Crosslinked polyethylene foam construction

Blank weatherproof covers are used to cover boxes not in use or junction boxes

Compliments 4-in. round weatherproof boxes installed in wet, damp or dry locations

Stamped steel construction and powder coated for corrosion resistance

Provides weatherproof protection for an outdoor 30/50 Amp receptacle

For one 2.125-inch diameter outlet mounted vertically in a one-gang weatherproof box

Features a self-closing lid to prevent moisture penetration when receptacle is not in use

Sigma's weatherproof round extension ring increases the capacity of a weatherproof box. The rugged, die-cast construction prevents moisture penetration making the boxes suitable for wet, damp or dry locations. Extension rings are powder coated for corrosion resistance and include closure plugs, hardware and gasket.

Sigma's weatherproof round extension ring increases the capacity of a weatherproof box. The rugged, die-cast construction prevents moisture penetration making the boxes suitable for wet, damp or dry locations. Extension rings are powder coated for corrosion resistance and include closure plugs, hardware and gasket.

Sigma's weatherproof round extension ring increases the capacity of a weatherproof box. The rugged, die-cast construction prevents moisture penetration making the boxes suitable for wet, damp or dry locations. Extension rings are powder coated for corrosion resistance and include closure plugs, hardware and gasket.

Weatherproof lampholder used for outdoor security or aesthetic applications

Compatible with multiple bulb types: LED, Incandescent, Compact Fluorescent (CFL) or Halogen (bulb not included)

Adjustable lamp heads are adjustable in any direction to illuminate wherever desired

Connects UF Cable to 1/2-in knockout

For 12/2 UF Cable

Wet location approved when used with a sealing locknut

Secures Rigid conduit, IMC and other threaded connectors to a box or enclosure

Compatible with 1/2-in Rigid conduit, IMC and other threaded connectors

Zinc-plated steel construction

Used to mount up to three lampholders with 1/2-in knockouts

Compliments 4-in. round weatherproof boxes installed in wet, damp or dry locations

Die-cast construction and powder coated for corrosion resistance

Vertical GFCI covers provide weatherproof protection for one-gang outdoor GFCI applications

Compliments a vertically installed GFCI receptacle and one-gang box in a wet, damp or dry location

Features a self-closing lid to prevent moisture penetration when receptacle is not in use

Provides weatherproof protection for horizontal and vertical installations using patented corner hinge

15 Amp TRWR duplex receptacle included

Complete kit includes universal cover, one-gang box with three 1/2-in holes, duplex receptacle, closure plugs, hardware and gasket

Secures Rigid conduit, IMC and other threaded connectors to a box or enclosure

Compatible with 3/4-in Rigid conduit, IMC and other threaded connectors

Zinc-plated steel construction