Pergolas feature a built-in gutter system that efficiently handles rainwater. Water that falls on the pergola drains into gutters located inside the beams and flows through the pillars, exiting via downspouts. Separate cable and water channels ensure all wiring is isolated from outdoor conditions. The special panel design maximizes water capacity, allowing for a gradual flow to the gutter. All control units are housed in the non-drainage pillar, ensuring protection from water and maintaining a sleek, modern look with hidden connections.