The Traditional 8 ft. x 36 in. White Rail Kit with Black Metal Balusters featuring PolyComposite technology offers the high quality, low maintenance solution you’ve been looking for. Our new PolyComposite technology is our strongest and most durable core ever. The PolyComposite core has no wood fiber or organic fillers, so it is not prone to warping or mold like other composites. The contrasting black metal balusters give your railing a custom look. Supported by a transferable limited lifetime warranty.