Seco South’s cable railing kits are designed for the Do-it-yourself individual. Our ModRail systems are designed using the same quality materials as commercial cable railing systems but they can be installed without any special tools or labor. The kits are designed to pass current residential building codes where 36” high railings are acceptable in up to 20 ft runs with up to 6 posts. It is recommended that you do not space your posts longer than about 4 ft. apart…