Daylight, fresh air, and convenience are the main factors of the E-Class Skylight Series. This self-flashed deck mount skylight delivers more light per opening and install in roughly 1/3 of the time as other skylights thanks to its patented one-piece extrusion. It features a condensation control without the use of weep holes. E-Class Skylights make the perfect addition to any home. Sitting directly on your roof deck, this self-flashing skylight opens manually to allow fresh air to flow throughout your home. A smooth turning handle is available when installed within reach. When installed out of reach, it is easily opens and closes with control rods. Rough Opening: 22-1/2" X 22-1/2". Daylight Area: 20-5/8" X 20-5/8". Daylight Area (Sq. Ft.): 2.95.