1/2″ Deep Rib (6″ OC Rib, 1/2″ Peak, 4-1/2″ Valley) 1/2″ Deep Rib (6″ OC Rib, 1/2″ Peak, 4-1/2″ Valley) July 14, 2022 1/2″ Deep Rib (6″ OC Rib, 1/2″ Peak, 4-1/2″ Valley)