Abstract: A device for joining panels, including first and second sections which, when connected together, provide recesses for receiving the edges of the panels. Each section has two wall portions adapted to lie substantially parallel to the panels to be joined and a connection member between the wall portions. Each connection member includes two spaced limbs, the two limbs of the first section being adapted to be inserted into a recess formed between the two limbs of the second section and each limb of the first section being provided with a series of serrations engageable with a series of serrations provided on a respective one of the limbs of the second section. The limbs of the second section are substantially rigid and the limbs of the first section diverge before insertion and are resilient, so that upon insertion they are pressed together and cause their associated wall portions to be pushed into clamping contact with surfaces of the panels.