Abstract: The retention stud is used to retain insulating panels in upright condition. The retention stud comprises elongated first and second spaced-apart side walls each defining in cross-section a front end and a rear end; at least one transverse wall integrally linking the first and second side walls spacedly from each other; elongated spaced-apart first front and rear flanges attached to the first side wall and extending away from the first and second side walls, with the first front flange being located frontwardly of the first rear flange along the first side wall; and elongated spaced-apart second front and rear flanges attached to the second side wall and extending away from the first and second side walls, with the second front flange being located frontwardly of the second rear flange along the second side wall. The first front and rear flanges and the first side wall define a first opened side channel for inserting the edge portion of a first insulating panel therein.

Abstract: The power generator unit includes a container having an acoustically insulated inner wall. The inner wall has wall panels each provided with a number of spaced-apart vertical retention studs between which acoustic panels are installed. The retention studs have a cross-sectionally C-shaped main body from which laterally and outwardly extend wing flanges. The acoustic panels are retained against the wall panel by the wing flanges which overlap the side edge portions of the acoustic panels.