Slotted Duct, Polyvinyl Chloride, 1 Inch x 2 Inches x 6 Feet, Light Gray, Base and covers sold separately, Made of lead-free PVC, UL Recognized continuous use temperature 122 Degrees Fahrenheit (50 Degrees Celsius), UL94 Flammability Rating of V-0, Conforms with NFPA 79-2002 section 14.3.1 requirement for flame retardant material, Provided with mounting holes.