3| RAILFX® RAILING OVERVIEW RailFX® Aluminum Rail and Cable System have been designed, engineered, and tested specifically for a cable, picket or glass application rail system. The aluminum framework and choice of infill options allows for railings to be lightweight, while still retaining exceptional durability. Rail Guidelines To comply with engineering and testing, posts must be spaced no more than 60" on center. Cables are spaced 3-3/16" on center to keep cable from deflecting beyond 4" to meet code. Cable can either terminate at the corner or run continuously through corners. Single corner posts can be used with cable running through the corner. Top rail is required for all railing installations.
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