Cascadia Stainless Steel Rod Rail gives you the look of a beefy rod railing with any top rail you want. The posts are designed to work for both straight & stair sections. The adjustable top on the posts makes attaching any board a breeze. Works with 2x4 or 2x6 boards, wood deck boards, or any solid edge composite deck board. Simple to install, you just need to order posts, rods & end caps, & post skirts - done. A typical Cascadia Rod Rail layout will cost approximately $384 per linear foot.