Hesta cooperates with numerous suppliers of window and door systems and components. Chief among them are companies from Germany, Austria and Belgium that guarantee a high technical and qualitative level of delivered components.
Window, exterior door and terrace door systems are supplied by Inoutic from Germany (plastic profiles) and Aliplast from Belgium (aluminium profiles).
Insulated glass is supplied by renowned glass manufacturers including Guardian, Saint-Gobain Glass and AGC. MACO supplies hardware for plastic windows and doors while G-U supplies hardware for plastic doors and terrace solutions and for aluminium systems together with other suppliers including Dr. Hahn, Fapim, Schüring and others. Door inserts are standard models or feature covering materials from Perito or Gavaplast.
Door and window handles and grips are supplied by Hoppe, ASD, Schüring and others.