Topaz's air handling cable ties are strong, made with 6/6 nylon and are designed to be used above drop ceilings and below raised flooring. Meets all UL codes for low smoke generation, low heat release and mechanical strength specifications. Nylon construction reduces particle contamination. Mounting design ensures secure positioning of wire bundles and cables to surfaces. Available sizes from 7 1/2" to 14 1/2"; UL listed.