Screw coupling Ø80 for a firm connection between the finishing plate and the flexible

This connector should be installed in conjunction with the reinforced top plate, 40 x 40 cm (FXPK) or 40 x 60 cm (FXPG). These two materials fit together well, ensuring proper ventilation of the shaft and efficient flue gas discharge. The screw coupling at the top can also be easily shortened to allow for easy installation of the finishing cap.