A skylight is provided for mounting to a wall of a vehicle to allow passage of light through the wall. The skylight may include a frame having a window that is configured to allow passage of light through at least a portion of the frame, and the frame may define an inner periphery about the window. A wall member may extend away from the frame adjacent to and about the inner periphery of the frame. A plurality of spaced apart gripping arms may extend away from one of the wall member and the frame adjacent to the inner periphery of the frame with the plurality of gripping arms extending beyond the wall member. Each of the plurality of gripping arms may be configured to engage the wall of the vehicle.