Ventilação de exaustão externa em aço inoxidável 304 espessado, tampa de ventilação, coifa, coifa de exaustão, saída de ar de coifa esférica

\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\\\ \\\