Railings AZEK Railings Products > Railings > AZEK Railings View quote “Timbertech Black Island Cap” has been added to your quote. Timbertech Black Pyramid Cap 5.5″ Timbertech Black Pyramid Cap quantity Add to Quote SKU: ARBPPOST55PC Category: AZEK Railings Related products Timbertech White Post Sleeve Add to Quote Timbertech Universail Rail Pack 8′; White Add to Quote Azek 6’X 36″ White Premier Rail Kit. Add to Quote Timbertech Universal Rail Pack 6′; Black Add to Quote