A method, apparatus, and kit adapted for installation over windows or the like. Included is a window film frame assembly that comprises a frame having a plurality of frame segments and a plurality of connector members. Pressure-sensitive adhesive strips are attached to one side of the frame and serve to attach a generally flexible film sheet structure thereto. The film sheet structure is provided so as to conform to the shape of the frame across the frame opening. The film sheet structure does not have an exterior surface coated with an adhesive material.