Universal mounting interface

A replacement door closer assembly kit, comprising:

• a door closer mechanism having a housing with a plurality of mechanism attachment points;
• a frame including a pair of spaced apart elongated beams and a pair of posts, the posts being releasably attached to the beams so as to extend between the beams and defining a plurality of interface attachment points, each of the beams comprising an elongated beam slot, the beams arranged so that the beam slots face one another and an opening is defined between the beams, the frame configured to lie flat against a door so that the interface attachment points align with the mechanism attachment points;
• a plurality of elongated cross members, each cross member having a first coupling portion at a first end and a second coupling portion at a second end, the first and second coupling portions configured to slidably fit within the beam slots, each cross member further comprising an elongated through slot between the first and second coupling portions;
• wherein the plurality of cross members span the opening between the beams;
• and
• wherein a back of the frame defines a planar back surface.

A method of mounting a mechanism onto a mount surface that comprises a plurality of pre-existing mount holes, comprising:

• attaching a mounting interface to the mount surface, the mounting interface comprising a first beam, a second beam and a plurality of cross members, attaching the mounting interface comprising:
• arranging the plurality of cross members so that a first coupling portion of each cross member is engaged in an elongated beam slot of the first beam and a second coupling portion of each cross member is engaged in an elongated beam slot of the second beam, each cross member having an elongated through-slot between the first coupling portion and the second coupling portion;
• arranging the first and second beams so that back surfaces of the first and second beams are in contact with the mount surface, and the plurality of pre-existing mount holes is arranged in an opening defined between the first beam and the second beam;
• positioning at least two of the cross members relative the first beam and second beam so that the through-slot of each of the at least two cross members is aligned with at least one of the plurality of pre-existing mount holes;
• and
• advancing a fastener into each of the plurality of pre-existing mount holes and aligned cross member so that the beams are attached to the mount surface;
• and
• attaching the mechanism to the mounting interface, comprising:
• aligning a mechanism attachment point of the mechanism with an interface attachment point of a post that is connected to and extends between the first beam and the second beam;
• and
• advancing a fastener through the aligned mechanism attachment point and interface attachment point.