The Clark Grave Vault Company - Site describes the characteristics and benefits of using metal burial vaults to protect caskets and its contents. Trigard - North American burial vault, infant casket/vault, and cremation urn manufacturer. Product information, family and company information, convention schedule, and dealer directory. Doric Burial Vaults - Manufacturer of lined-concrete burial vaults and a distributor of cremation memorialization products in the United States and Canada. Wilbert, Inc. - Providers of lined burial vaults, cremation urns, and concrete crypts to funeral directors in southeast Texas. Describes vault options and provides funeral facts and links. T & J Manufacturing Corp. - Based in Indiana, makes lowering devices and supplies parts. Provides images of products, contact details and company information. Esterly Burial Vaults - Located in Pennsylvania. Also provides concrete urns. Includes product information.