Dimensions: 4’ Long X 42" high The spacing of the gaps between the runners is approximately 3 7/8" Vertical posts are made from powder coated 2X2 steel tubing for high strength and longevity The banister is adjustable for use on flats or stairs of any angle from 0-45° Flexible positioning of the vertical posts. Posts can be installed where you need them to be, as the runners slide through the vertical posts, and the top rail is installed using self tapping screws. This banister can be extended to any length by using the provided 5/8 11 studs to thread together the pre-threaded round aluminum runners. The provided top rail also comes with an internal splice that allows you to easily add more sections for a continuous railing. Excellent choice for contractors, as it is adjustable, and extendable to any needed length. Comes with stainless steel set screws, stainless steel mounting hardware, stainless steel bolts to install the aluminum runner clamps to the vertical posts, and stainless steel bolts to install the top hinges on the posts. Comes with 5/8 11 threaded studs to extend the runners.Comes with matching plastic endcaps for the runners and the top rail that can be installed in the ends of the runners. Able to be trimmed on site. Trimming or cutting are done at the installers risk. This banister not only allows for flexible positioning of the vertical posts, but the aluminum runners and the aluminum top rail are able to be custom trimmed on site to fit your exact needs. Concept Fusion is not responsible for buyer's modifying the product in any way, including trimming and or cutting of pieces. Buyers must follow installation instructions. Kit includes the Following: (2) 42” High vertical steel posts and their hardware, (8) 4 Foot Long round aluminum runners, (1) 4 Foot aluminum top rail.0Please note---- the (8) aluminum runners and the (1) aluminum top rail come as single piece lengths. This Concept Fusion Fully Adjustable Banister is designed for extremely flexible application to suit the buyers need. It can be installed on a flat or on a stairway. The design allows the banister to adjust to fit your specific stair requirements on any angle of 0-45°. The offered lengths of the banister are measured when installed on a flat surface. The banister is adjustable for use on flats or stairs of any angle from 0-45° Flexible positioning of the vertical posts. Posts can be installed where you need them to be, as the runners slide through the vertical posts, and the top rail is installed using self tapping screws. This banister can be extended to any length by using the provided 5/8 11 studs to thread together the pre-threaded round aluminum runners. The provided top rail also comes with an internal splice that allows you to easily add more sections for a continuous railing. Comes with stainless steel set screws, stainless steel mounting hardware, stainless steel bolts to install the aluminum runner clamps to the vertical posts, and stainless steel bolts to install the top hinges on the posts. The banister is 42" high from the floor to the top of the top rail The spacing of the gaps between the runners is approximately 3 7/8" Vertical posts are made from powder coated 2X2 steel tubing for high strength and longevity **Concept Fusion is not responsible for buyer's modifying the product in any way, including trimming and or cutting of pieces. Trimming or cutting or modification of the product in any way is done at the installer’s risk. Buyers must follow installation instructions. Posts not designed to be installed into knee walls**