19 Concrete building materials, namely, precast concrete banding in the nature of a concrete support, bridge decks, bridges, coping, wall caps, pier caps, fencing panels, gates, keystones, light poles, power poles, lintels, mortarless blocks, obelisks, pavers, prefabricated utility buildings, quoins, retaining walls, sound barriers, underground utility enclosures in the nature of concrete tubing and pipes; exterior wood veneer, balusters, balustrades, bollards both with and without lighting, columns and fitted column covers, control towers, corbels, cornices, decorative bas reliefs, finials, fountains, decorative architectural medallions, stair and landing units, stair treads, concrete statues, window and door jambs, window sills