• An extra measure of protection with a choice of two metals: Aluminum and Galvanized Steel. • Galvanized steel, available in three non-porous metal thicknesses – 7 gauge, 10 gauge and 12 gauge – doubles the life of the vaults. • You find this type of more durable galvanizing in guardrails, highway sign frames and posts, and light posts. • The natural properties of premium quality aluminum protects caskets from the elements for generations. • Available in 1/8 inch thickness, series 5052 aluminum is commonly used in boat hulls, hydraulic tubing and appliances.