Fire Retardant Rip-Tie Lite Plenum is the ideal choice for cable management use in air handling spaces. Meeting the requirements of these regulations, Rip-Tie Lite Plenum allows use for wire and cable management above a hung ceiling or below a raised floor. Manufactured from Polypropylene and Nylon, this light duty strap offers 50 re-fastenings. Choose between black and cranberry color ties.