Arch Top Surface Mount PVC Gable Vent: Functional, w/ 3-1/2"W x 1"P Standard Frame, 20"W x 34"H In. Keep the traditional look of an exterior gable vent, without the downsides of traditional wood, by ordering PVC gable vents.Dimensions: 20"W x 34"H - Frame Size: 3-1/2"W x 1"P - Venting Area: 44 Sq. Upon arrival, the PVC should be painted before installation with the exterior color of your choosing.