A knock-down partition panel frame includes a pair of spaced apart generally upright posts, each having at least one receptacle defining a tapered surface. The partition panel frame further includes at least one generally horizontal member extending between and interconnecting the posts. The horizontal member includes fastenerless connectors at opposite ends thereof, each having at least one connecting element engaging with the tapered surface to thereby securely interconnect the posts and the horizontal member to define a rigid partition frame having an interior space. A cover panel is secured to the partition frame, and closes off at least a portion of the interior space.

An extension panel for connection to a lower panel of the type having vertical uprights defining upper ends and including a utilities passageway extending along an upper edge of the lower panel for receiving utility conduits therein. The extension panel includes a pair of space-apart upright posts, and at least one beam extending between the posts and rigidly interconnecting the same. A pair of structural members extend downwardly from the lower ends of the posts to engage the lower panel and rigidly interconnect the extension panel and the lower panel. The structural members are laterally spaced-apart to define a downwardly-opening utilities opening therebetween. The utilities opening is positioned in alignment with the utilities passageway of the lower panel to permit utilities conduits to pass through the utilities opening when the extension is secured to the lower panel.

A knock-down portable partition including a panel frame having a central portion. At least one cover panel covers at least a portion of the central portion of the panel frame. Connectors detachably mount the cover panel on the panel frame to facilitate assembly and removable of the cover panel on the panel frame. The panel frame includes at least two vertical posts each having an upper end, a lower end and opposite faces with at least two beam connection ports thereon positioned adjacent the upper and lower ends of the associated one of the posts. The panel frame also includes upper and lower beams extending generally horizontally between the vertical posts adjacent the upper and lower ends thereof, and interconnecting the same adjacent the connection ports. Movable lock members having a flexible extension are positioned on one of the posts and the beams adjacent the connection ports, and are movably mounted thereon for shifting between an unlocked position and a locked position. The panel frame further includes lock-engaging surfaces positioned on the other of the posts and the beams adjacent the connection ports. The lock-engaging surfaces are located thereon to engage the flexible extensions when the lock members are shifted to the locked position to rigidly yet detachably interconnect the posts and the beams for quick and complete assembly and disassembly of the knock-down portable partition.

A knock-down portable partition includes a rigid panel frame having a central portion. The partition includes at least one cover panel covering at least a portion of the central portion of the rigid panel frame. Connectors detachably mount the cover panel on the panel frame to facilitate assembly and removal of the cover panel on the panel frame. The rigid panel frame includes at least two vertical posts having an upper end, a lower end, and opposite side faces. The opposite faces have at least two beam connection ports thereon positioned adjacent the upper and lower ends of the associated one of the posts. The panel frame also includes upper and lower beams extending generally horizontally between the vertical posts adjacent the upper and lower ends thereof, and interconnecting the vertical posts adjacent the connection ports. The panel frame includes quick-disconnect connectors such as movable lock members positioned on one of the posts and the beams adjacent the connection ports. The movable lock members are movably mounted for shifting between an unlocked position and a locked position. The panel frame further includes lock engaging surfaces positioned on the other of the posts and the beams adjacent the connection ports. The lock engaging surfaces are located thereon and abuttingly engage the lock members when the lock members are shifted to the locked position to rigidly yet detachably interconnect the posts and the beams for quick and complete assembly and disassembly of the knock-down portable partition.