1-1/2″ Deep Rib (8″ oc, 1″ Peak, 6.5″ Valley) 1-1/2″ Deep Rib (8″ oc, 1″ Peak, 6.5″ Valley) July 14, 2022 1-1/2″ Deep Rib (8″ oc, 1″ Peak, 6.5″ Valley)