Fir Post Cap – PC725F Call For Quote $25.13 Exterior or Interior Post Cap 7-1/4″ x 7-1/4″ x 1-1/2″ View Product Catalog Fir Post Cap - PC725F quantity Add to list Want a discount? Become a member. SKU: PC725F Categories: Exterior, Stair Parts Description Description Traditional Fir pyramid cap, 7-1/4″ x 7-1/4″ x 1-1/2″ thick. flat bottom. PC725F – Fir Made locally in Portland, Oregon.