Blackjack Pedestal Extender, 3/4" *76 Pc Box*

Height extensions and height adjustments are easy and convenient. Independent chock adjustments can be made to compensate for differences in slab thickness. Eliminates the need for bedding sand or cement screed, reducing the load burden on building structures. It also reduces installation time and costs. Joint sealant and grouts are unnecessary between slabs. The slab gaps provide surface drainage and allow for expansion and contraction.