Alflex-Type RWA 1/2-Inch Reduced Wall Aluminum Flexible Metal Conduit. High Strength Aluminum Alloy Strip. 5/16-Inch is UL Recognized Component. UL Listed in sizes 3/8-Inch to 3-Inch. 600-Volt. Alflex Type RWA is manufactured with a lightweight; high strength aluminum alloy. UL Listed per UL 1; Standard for Safety for Flexible Metal Conduit; ANSI/UL-1. Meets federal specification WW-C-566c. NEC Type Designation-Article 348; Type FMC flexible metal conduit. Alflex Type RWA Reduced Wall Aluminum Flexible Metal Conduit is suitable for the following installations: Environmental air-handling spaces per NEC 300.22C; Power and lighting branch circuit conductors and cables for connecting receptacles; luminaires; equipment; office partitions; etc.; Metal raceway for wires and cables per NEC ANSI/NFPA-70 Article 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 Article 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 2008 NEC 250.1185; Electric signs and outline lighting per NEC 600.7; 600.31 1000-Volt or less; and 600.32 >1000-Volt; Hazardous location; Class 1; Div. 2; for flexible connectors only per 2008 NEC 501.10B2 and 501.30B; UL 1; 2; and 3 Hour Through-Penetration Firestop Systems: C-AJ-1462; C-AJ-1463; C-AJ-1464; W-L-1308; and W-L-1309; Listed wired fixtures per NEC 410.77C; Raised floors for connection of information technology per NEC 645.5D2 and 645.5D; Places of assembly and theaters per NEC Articles 518 and 520; Cranes and hoists per NEC 610.11C