Panduct® Type-F narrow slot wiring duct narrow slot/finger design provides more slots to fit the spacing of high-density terminal blocks and other hardware. Material lead-free PVC. UL recognized continuous use temperature 122°F. UL 94 flammability rating of V-0. Conforms with NFPA 79-2007 section 13.3.1 requirement for flame retardant material. Provided with mounting holes.