A portable erectable shelter may include a pair of wall panels arranged outermost from a pair roof panels. The pair roof panels may be between the pair of wall panels in a collapsed, vertical position of the shelter. The portable shelter may include a first outer wall truss link rotatably fixed to a sidewall of a first wall panel and having a first end pivotally secured to a first corner of a first roof panel and a free end opposite the first end. The portable shelter may further include a first outer roof truss link rotatably fixed to a sidewall of the first roof panel and including a first end pivotally secured to a first corner of the first wall panel. The first end of the first outer wall truss link may be arranged to abut the first end of the first outer roof truss link in an erect position.