Slotted Hinged Duct, Polyvinyl Chloride, 1.5 Inches x 3 Inches x 6 Feet, Black, Base and covers sold separately, Made of lead-free PVC, Rated for continuous use temperatures up to 122 Degrees Fahrenheit (50 Degrees Celsius), UL94 Flammability Rating V-0, Conforms with NFPA 79-2002 section 14.3.1 requirement for the flame retardant material, Available in Black, Light Gray and White, Provided with standard mounting holes.