Abstract: A modular panel arrangement for erecting a prefabricated room, the panel includes inner and outer planar skins, an insulated core, and an interior chamber isolated from said insulated core, wherein said interior chamber has an inlet opening and an outlet opening so that air can flow into said panel through said inlet opening, through said interior chamber and out of said panel through said outlet opening.

Abstract: An insulated panel arrangement includes hook assemblies and pin assemblies to secure two panels together. The skin of at least one panel extends beyond the end face of the panel and is received in a recess in the skin of the adjacent panel so the two panels can be welded together to form a flat, continuous planar skin.

Abstract: An insulated panel arrangement includes pin support members and rod support members having end surfaces that bear against the end faces of the panel skins, with at least a portion of the end surfaces of the pin support members lying directly opposite the end surfaces of the rod support members.

Abstract: A structure wall includes first and second cooperating building panels. The first building panel includes first and second skins forming respective first and second opposed panel faces and a first foam filled core between the first and second skins. A portion of the foam filled core defines a groove that extends substantially continuously across the first building panel. A slotted rail extends substantially continuously across this groove. The second building panel includes third and fourth skins forming third and fourth opposed panel faces. A second foam filled core is provided between the third and fourth skins. The second foam filled core has at least one latch which may be extended from the panel to selectively engage the slotted rail at substantially any position along the rail. In this way, it is possible to provide substantially infinite adjustability of the position of the second building panel relative to the first building panel while also providing a secure and reliable connection therebetween.