Class A Customs 17 x 24 rv INTERIOR replacement SKYLIGHT WHITE plastic roof trailer NO SHIPPING TO ALASKA, HAWAII, PUERTO RICO, or USVI. Color: Creamy White Mounting Flange Is Pre-drilled For Easy Mounting Inner Dome Dimensions (this is roughly the size of the hole you will need in your unit): 14" wide x 21 1/2" Long Exterior Dimensions: 16 1/2" wide x 24" Long x 5" tall