These top and bottom rail brackets screw to Regal railing posts or structure when making custom height railings or ''step down'' on decks. Constructed of high-strenght cast aluminum and premium coated finish to provide maximum durability and minimal maintenance. You will enjoy your deck quickly as these post rail brackets are designed for quick and easy installation. Top bracket mounting holes are inside the bracket to hide fasteners and provide a more finished appearance. Dimensions of 7'' (17.78cm) x 4.25'' (10.8cm) x 1.5'' (3.8cm). 20-year warranty on material and 10-year warranty on finish.