Flue pipe elbow 45° PP BlackUV stabilized elbow 45 degrees, a solution for external ventilation pipe installations extending beyond the roofline. Perfect for creating angles in your ventilation pipes, especially when navigating protruding structures. This elbow matches our black pipes and flue terminal cap, ensuring a durable, fade resistant finish. Sold individually with one elbow per box, keep in mind that new installations often require two 45 degree elbows.