Southwire #: 55283202

Steel Flexible Metal Conduit. High Strength Steel Strip. UL Recognized Component in 5/16". UL Listed in 3/8" through 3". CSA Certified for Trade Sizes 5/16" and 3/8" Available Upon Request.

Download Category Specifications
PDF Excel Table
Select Product Specifications


Galflex® Type RWS (Reduced Wall Steel) Flexible Metal Conduit is suitable for the following installations:

  • Environmental air-handling spaces per NEC 300.22(C)
  • Power and lighting branch circuit conductors and cables for connecting receptacles, luminaires, equipment, office partitions, etc.
  • Metal raceway for wires and cables per NEC 348
  • Motor feeder, branch, and control circuit conductors and cables
  • Class 1, Class 2, Class 3 Remote-control, signaling, and power-limited circuit conductors and cables
  • Fire alarm system conductors and cables of power-limited or non-power-limited fire alarm circuits
  • Voice, data, communications and video cables including CATV and optical fiber cables
  • Concealed or exposed installations per NEC 348 and the applicable NEC provisions
  • Elevators, hoistways, and escalators per NEC 620.21
  • As a grounding conductor for lengths up to 6 feet (20A max) as per NEC 250.118(5)
  • Electric signs and outline lighting per NEC 600.7, 600.31 (1000 volts or less), and 600.32 (>1000 volts)
  • Listed wired fixtures per NEC 410.77(C)
  • Raised floors for connection of information technology per NEC 645.5(D)(2) and 645.5(D)
  • Places of assembly and theaters per NEC 518 and 520
  • Cranes and hoists per NEC 610.11(C)
  • Hazardous location, Class 1, Div. 2, for flexible connectors only per NEC 501.10(B)(2) & 501.30(B)
  • UL 1, 2, & 3 Hour Through-Penetration Firestop Systems: C-AJ-1462, C-AJ-1463, C-AJ-1464, W-L1308, and W-L-1309


Stock # 55283202 55283202
Trade Size (in) (cm) 5/16 0.79 inch cm
Outer Diameter (min/max) 0.470 / 0.510 1.19 / 1.30 inch cm
Nominal Total Weight (lbs/1000') (kgs/km) 130 193 lbs/1000' kgs/km

Standards & References

  • UL Listed per UL 1, Standard for Safety for Flexible Metal Conduit, ANSI/UL-1 for 3/8" through 3"
  • CSA Certified per CSA 22.2 No. 56 per Canadian Electrical Code C22.1 Section 12-1000 for 5/16" and 3/8" trade sizes only
  • Meets federal specification WW-C-566c
  • NFPA 70 (National Electrical Code), Article 348, Type FMC (flexible metal conduit)
  • REACH/RoHS-2 (Chemical Limit) Compliant


Galflex® Type RWS is manufactured with a galvanized, corrosion resistant, high strength steel alloy. The metal strip is helically formed into a continuously interlocked flexible metal conduit that can withstand impact and crushing forces.