Riser rated fire retardant corrugated duct are designed to protect existing cables and facilitate future cable installation or replacement. When tested to UL2024/UL910 (CSA FT-4), Dura-Line’s Corrugated Riser is a low-smoke producing and fire resistant as defined by the American “National Fire Protection Association” when rating cables as suitable for use in ducts, riser spaces.
FEATURES
- Riser: UL Listed designed for riser applications per NEC articles 770 & 800, UL Standard 2024, and CSA FT-4
- Sequential footage markings
- Flexible, lightweight and easier to install than metal conduit
