Abstract: A concrete insert having a housing with an elongate centre portion. Longitudinal sides depend inwardly and have edge surfaces. Longitudinal flanges depend transversely from longitudinal sides and diverge. Lateral ends depend inwardly and have mating surfaces on inside surfaces of the lateral ends for mating substantially flush with the edge surfaces which support the lateral ends and flanges. Lateral flanges depend transversely from lateral ends and diverge. The concrete insert includes a nut box insert comprising a bottom wall mounted in the housing for sealing an open bottom of housing and for sealing the gaps between the edge surfaces and the mating surfaces. The housing and the nut box insert forming a nut box, with a nut slidably mounted in the nut box, the nut box for constraining rotation of the nut for the threaded hole in the nut to receive a threaded fastener through an access slot in housing.

Abstract: A concrete insert for casting in a concrete wall panel, having a housing having an elongate center portion and two opposing longitudinal sides, and two opposing longitudinal flanges. The elongate center portion is bounded by opposing outer longitudinal bend lines, the elongate center portion defining a longitudinally oriented nut access slot. The opposing longitudinal sides depend inwardly from the opposing outer longitudinal bend lines to opposing inner longitudinal bend lines. The opposing longitudinal flanges depend from opposing inner longitudinal bend lines transversely to the opposing longitudinal sides and extend in mutually divergent relation. The housing and the nut box insert comprise a nut box. The nut box insert comprises at least one resilient layer having resilient end walls compressed against the housing by the compression plate for substantially preventing wet cement from entering the nut box. In another approach, end walls substantially prevent wet cement from entering the nut box.

Abstract: A concrete insert for casting in a concrete wall panel, having a housing having an elongate centre portion and two opposing longitudinal sides, and two opposing longitudinal flanges. The elongate centre portion is bounded by opposing outer longitudinal bend lines, the elongate centre portion defining a longitudinally oriented nut access slot. The opposing longitudinal sides depend inwardly from the opposing outer longitudinal bend lines to opposing inner longitudinal bend lines. The opposing longitudinal flanges depend from opposing inner longitudinal bend lines transversely to the opposing longitudinal sides and extend in mutually divergent relation. The housing and the nut box insert comprise a nut box. The nut box insert comprises at least one resilient layer having resilient end walls compressed against the housing by the compression plate for substantially preventing wet cement from entering the nut box. In another approach, end walls substantially prevent wet cement from entering the nut box.

Abstract: A concrete insert having a housing with an elongate centre portion. Longitudinal sides depend inwardly and have edge surfaces. Longitudinal flanges depend transversely from longitudinal sides and diverge. Lateral ends depend inwardly and have mating surfaces on inside surfaces of the lateral ends for mating substantially flush with the edge surfaces which support the lateral ends and flanges. Lateral flanges depend transversely from lateral ends and diverge. The concrete insert includes a nut box insert comprising a bottom wall mounted in the housing for sealing an open bottom of housing and for sealing the gaps between the edge surfaces and the mating surfaces. The housing and the nut box insert forming a nut box, with a nut slidably mounted in the nut box, the nut box for constraining rotation of the nut for the threaded hole in the nut to receive a threaded fastener through an access slot in housing.