Abstract: Simple, portable fence units for constructing fences are not new. It is also known to interconnect adjacent fence sections using pins and sockets. An improved version of a fence structure for constructing straight or angled fence sections in corrals or animal feeders includes a section or unit for connection to other similar sections or units including a rectangular frame with couplings on each end thereof. The coupling on one end is a pair of short, parallel tubes or sleeves which are welded together and welded to the end of the frame. The other coupling includes a pair of spaced apart tubes or sleeves for receiving the first coupling therebetween. When the outermost sleeves of the couplings on opposite ends of two adjacent frames are axially aligned and a pin is inserted therethrough, the two frames can be pivoted with respect to each other or define an angled length of fence.