The S2 Rack System from Manta Racks is designed to safely and securely transport two stand-up paddleboards. This system includes 2 SUP racks that are constructed for installation into 2 through-bolted, reinforced fishing rod holders (spaced 24" to 48" apart). Made from 1/4" powder-coated aluminum, the SUP racks feature EVA foam padding to cushion your boards and come with durable stainless steel hardware that resists corrosion. Note: It's important to measure the angle of your fishing rod holders to ensure you order the correct SUP rack. For instance, a 15° rod holder will not work with a 30° Manta Rack. Downloading the Angle Meter App for Android or Apple will help you determine the angle of your fishing rod holders before you purchase a Manta Rack system. Made from powder-coated aluminum with EVA foam cushioning Includes durable stainless steel hardware | S2 Black Double Paddleboard Rack For 1-15° &1-30° Rod Holders