Diamond Dome Sunpipe 230mm/9" 3 - Section Adjustable 45dg Elbow The 3 piece adjustable Diamond Dome elbow allows you to work more flexibility in your 230mm Diamond Dome Sunpipe system. Able to adjust to a maximum of 45dgs, the 3 section adjustable sunpipe elbow allows extra flexibility and manipulation over the direction of natural light to your desired room than the 2 section adjustable elbow. The adjustable elbow is also able to be used in conjunction with other sunpipe elbows the possibilities are endless.