PLC Module Stacking Salt and Spice Cellar SetThe Port Living Module Stacking Cellar Set includes two stacking vessels. This is designed integrating cork gaskets which seal both containers while providing a non scratch surface for your tabletop. This concrete set is hand burnished with FDA approved sealer using Ductal concrete from Portland, OR. The bottom of the vessel is backed with cork for tabletop and countertop protection. Detail Set of 2 (One gray and one white) 4 inch diameter x 3. 75