Constructed of durable, lightweight plastic with accent. Door opens and closes easily on a stainless steel hinge pin and locks with a marine locking latch. Inside box dimensions: 11-3/4"L x 4"H x 6-5/8"D. Installation hole size: 12"L x 4-1/4"H. Door: 13-3/4"L x 5-1/2"H