Answer by  
                                                                                          esteban (1334)
                                                            
                          
                          
                                                          Yes, 16 gauge sheet metal is thicker than 18 gauge sheet metal.  Metal is rolled through a press that gets thinner and thinner the further a gauge is turned.  So, when the gauge is set of 16, it produces a thicker product than when it is set on 18.