All flashings or curb caps can be modified by adding a turret extension. It raises the height of the dome to avoid snow, rain runoff, and shading from roof obstructions like mechanical units or parapet walls. The turret extension also allows the dome to clear thick roofing materials or insulation.Turret extensions are available in 2 in. (50 mm), 4 in. (100 mm), 12 in. (300 mm), 24 in. (600 mm), 36 in. (900 mm) and 48 in. (1,200 mm) heights. See Product Selection Guide for specifics.
Keep in mind a turret extension must still be lined with Spectralight® Infinity Tubing. In the case of Solatube® Daylighting Systems 160 DS and 290 DS models, addition of a turret extension may require a Spectralight Infinity 0-90 degree angle adapter.