Detectable Underground Warning Tape – “Caution: Fiber Optic Line Below” Tapes are color coded according to American Public Works Association standards.Made from 5 mil, triple layer lamination of aluminum foil core encased in 100% virgin polyethylene. Tape can be found by metal detector to eliminate needless digging. Subsurface graphics permanently protected from soil acids and alkalis. Tapes withstands temperatures from -94°F to 200°F. for excellent longevity.
