Icon Technologies's Skylight Inner Dome for a 27 1/4" x 9 1/2" Skylight opening. Complete your replacement with a new outer dome, NSL2810. • Finishes the look of your skylight with a 1 1/4" white flange • Clear Inner dome • Easy installation • Made in North America • Fits all standard 27 1/4" x 9 1/2" skylight openings. • Opening Dimension: 27 1/4" x 9 1/2" • Outer Dimension: 29 3/4" x 11 1/4" x 5" Finish off your replacement with an ICON skylight | Icon Technologies Skylight Inner Dome, Low Profile, for NSL2810 in White