Skylight Inner Dome for a 21 1/2" x 10" Skylight opening. Complete your replacement with a new outer dome, NSL229.
- Finishes the look of your skylight with a 1 1/8" white flange
- Clear Inner dome
- Easy installation
- Made in North America
Fits all standard 21 1/2" x 10" skylight openings.
- Opening Dimension: 21 1/2" x 10"
- Outer Dimension: 23 5/8" x 11 1/2" x 5 1/8"
