Discovery 2.5 in. Aluminum Post Kit

Build a durable railing foundation with the KeyLink Discovery Series 2-1/2" x 2-1/2" Aluminum Post Kit. These square extruded posts arrive in Textured Black to coordinate with Discovery Rail Kits and include a welded base plate, post cap, and pre-attached brackets for immediate installation. The Discovery system streamlines your selection process with four distinct post options. Line Posts connect consecutive straight sections with four brackets included. Corner Posts handle 90-degree angles and come equipped with four brackets. End Posts conclude your railing run with two brackets attached. Blank Posts, standing 48" tall, accommodate stair applications and custom layouts—order Stair Brackets separately as needed for each opening. All standard posts measure 2.5" x 2.5" x 38" and mount securely to any surface via the welded base plate. The non-fluted aluminum construction resists weathering and requires minimal maintenance. If you're retrofitting existing wood posts, consider our 4x4 Aluminum Sleeve options for a refined transition. Select your post configuration based on your specific railing layout to ensure proper support and alignment throughout your system.