Abstract: A modular adhesive insert for a construction anchor allows for controlled dispersion of adhesive in a pre-formed bore, and multiple insert screens to be attached to each other to create many sizes of screens. The insert comprises an end cap and also includes an abutment structure. The insert includes a housing with a first end and a second end, the first end including a first set of connection structures, the second end including a second set of connection structures, the housing including a plurality of shutters between the first end and the second end, each of the shutters adapted to vary a size of an opening associated with each said shutter.