The 10-foot top rail is precision molded in urethane and reinforced at the core. The high-density polyurethane construction results in a balustrade that remains resistant to the effects of moisture, and the heavy-duty vinyl tubing adds strength and structural integrity. The rail is also pre-finished in a durable exterior grade primer, so it is ready for installation and painting. The 7" Balustrade System offers a balance between the slim 5" system and the prominent 12" system. Versatile urethane balustrade system components are designed to give you the flexibility that you need to enrich virtually any exterior. Urethane balustrades conform to and accentuate porches, stairways, balconies, patios, decks and more.