General Cable offers Foam Skin ALVYN Riser Cable. All the products of General Cable are manufactured in accordance to ISO 9001:2000. The Foam Skin ALVYN Riser Cable has 24 and 26 AWG solid bare annealed copper conductor. The dual insulation consists of an inner layer of foamed polyolefin surrounded by a solid PVC skin. The Core Wrap is made of non-hygroscopic dielectric tape, applied longitudinally with an overlap. Shield includes 0.008 inch corrugated, adhesive coated aluminum bonded to jacket and the jacket is made of gray flame-retardant PVC, bonded to the coated aluminum.