INQUADRA BLOKKO: monobloc designed to eliminate the window heat bridges and make anchoring the shutters easier when insulation is present. INQUADRA BLOKKO consists of an EPS top crosspiece and sides. The sides are in BLOKKO, a high-density material that allows fixing the DE FAVERI customised hinges. The wall fixing system uses suitably sized brackets. The fourth DF side completes the solution.