? Double - Companion Burial Vault For Two Urns is super strong for an over sized urn, or two urns and should be accepted at any cemetery for urn burial. This vault has been tested at 2000 PSI (per square inch), so it will not crush. The material used is ABS (Acrylonitrile Butadiene Styrene). ABS offers excellent mechanical properties and is strong to delivers good impact strength. ? You can place your urns in the vault, the bags of ashes or temporary containers directly. ? Measures: Outside: 16.5" tall x 12" depth x 15" width Inside: 14" tall x 9 3/4" depth x 13 3/4" width Interior dome height: 14.5" ? Satisfaction Guaranteed. ? Get it fast! Ready to ship in 3?5 business days.