3/4″ Deep Rib (4″ oc, 1.5″ Peak, 1.5″ Valley) 3/4″ Deep Rib (4″ oc, 1.5″ Peak, 1.5″ Valley) July 14, 2022 3/4″ Deep Rib (4″ oc, 1.5″ Peak, 1.5″ Valley)