Skylight Inner Dome for a 20 3/8” x 18 7/8" Skylight opening. Complete your replacement with a new outer dome, SL1920. When paired with an ICON SL1920 outer skylight dome, the minimum roof thickness required is 3".
- Finishes the look of your skylight with a 1 1/8" white flange
- White Inner dome
- Easy installation
- Made in North America
Fits all standard 20 3/8” x 18 7/8" skylight openings.
- Opening Dimension: 20 3/8" x 18 7/8"
- Outer Dimension: 22 5/8" x 21 1/8" x 4 3/4"
