Door, window, and partition casing arrangements for dry wall partitions

Abstract From the Canadian patent

Door, window and partition casing arrangements for dry wall partitioning in which a basic casing is provided to line and mask the opening made in the dry wall partitioning for the purpose of providing door and window or the like installations in the wall structure provided by the partition, with the casing having a basic generic arrangement in the form of an elongated member having a longitudinally extending web portion which lines and masks a portion of the partition opening itself which member, includes a snap fit trim receiving channel portion that is disposed along, the margin of the adjacent wall surfacing defined by the partitioning about the opening provided. This basic casing member …