A portable erectable shelter, comprising: first and second wall panels arranged outermost from first and second roof panels defined between the first and second wall panels in a collapsed, vertical position, whereby the first wall panel is framed by a first link connector, a second link connector, a first inner truss link, and a second inner truss link and the second wall panel is framed by a first link connector, a second link connector, a third inner truss link, and a fourth inner truss link; first and second outer truss links (202,204) rotatably fixed to a sidewall of the first wall panel and having a first end pivotally secured to a first corner of the first roof panel and a free end opposite the first end; third and fourth outer truss links (206,208) rotatably fixed to a sidewall of the second wall panel and each having a first end pivotally secured to a first corner of the second roof panel and a free end opposite the first end; a first floor panel including first and second floor truss links (792, 794) pivotally secured to an end of, respectively, the first and the second inner truss links; a second floor panel including third and fourth floor truss links (292, 294) pivotally secured to an end of, respectively, the third and the fourth inner truss links; the first floor panel extending between the first floor panel truss link and the second floor panel truss link; the second floor panel extending between the second floor panel truss link and the second floor panel truss link; and a first outer roof truss link rotatably fixed to a sidewall of the first roof panel and having a first end pivotally secured to a first corner of the first wall panel, in which the first end of the first outer wall truss link is arranged to abut the first end of the first outer roof truss link in an erect position; as well as a second outer roof truss link rotatably fixed to a sidewall of the second roof panel and having a first end pivotally secured to a first corner of the second wall panel, in which the first end of the second outer wall truss link is arranged to abut the first end of the second outer roof truss link in an erect position. first and second wall panels arranged outermost from first and second roof panels defined between the first and second wall panels in a collapsed, vertical position, whereby the first wall panel is framed by a first link connector, a second link connector, a first inner truss link, and a second inner truss link and the second wall panel is framed by a first link connector, a second link connector, a third inner truss link, and a fourth inner truss link; first and second outer truss links (202,204) rotatably fixed to a sidewall of the first wall panel and having a first end pivotally secured to a first corner of the first roof panel and a free end opposite the first end; third and fourth outer truss links (206,208) rotatably fixed to a sidewall of the second wall panel and each having a first end pivotally secured to a first corner of the second roof panel and a free end opposite the first end; a first floor panel including first and second floor truss links (792, 794) pivotally secured to an end of, respectively, the first and the second inner truss links; a second floor panel including third and fourth floor truss links (292, 294) pivotally secured to an end of, respectively, the third and the fourth inner truss links; the first floor panel extending between the first floor panel truss link and the second floor panel truss link; the second floor panel extending between the second floor panel truss link and the second floor panel truss link; and a first outer roof truss link rotatably fixed to a sidewall of the first roof panel and having a first end pivotally secured to a first corner of the first wall panel, in which the first end of the first outer wall truss link is arranged to abut the first end of the first outer roof truss link in an erect position; as well as a second outer roof truss link rotatably fixed to a sidewall of the second roof panel and having a first end pivotally secured to a first corner of the second wall panel, in which the first end of the second outer wall truss link is arranged to abut the first end of the second outer roof truss link in an erect position.