1.25″ Deep Rib (4″ oc, 2.5″ Peak, 1″ Valley) 1.25″ Deep Rib (4″ oc, 2.5″ Peak, 1″ Valley) March 20, 2025 1.25″ Deep Rib (4″ oc, 2.5″ Peak, 1″ Valley)