lined and sealed burial receptacle that performs all the functions of the concrete box.  It is additionally designed and constructed using one or more lining and sealing materials to increase the
overall tensile strength of the finished unit and to reduce the risk of the intrusion of exterior elements.

The Guardian Standard gives the basic grave protection.  It comes
with a sealed cover, not waterproofed and is painted (silver).
The vault has a total weight of 2000lb (400 lb. cover/1600 lb base).