A foldable cable tray comprising: a first side rail; a second side rail, the second side rail parallel to the first side rail; each of the first and the second side rails (12, 14) including a web and a lower flange; each of the lower flanges comprising a plurality of lower flange locking holes and a plurality of lower flange mounting holes; a plurality of rungs movably connected to the first and second side rails (12, 14) to transit the foldable cable tray between unfolded and folded positions; each of the plurality of rungs comprising a rung mounting hole (50, 54) and a rung locking hole (52, 56) at a first end portion and at a second end portion thereof; a locking device configured to lock each of the plurality of rungs to the lower flange of the first and second side rails (12, 14) by inserting the locking device through the lower flange locking hole and the rung locking hole (52, 56) when the foldable cable tray is in the unfolded position and a plurality of movement devices, each movement device of the plurality of movement devices being secured in the rung mounting hole (50, 54) of a rung of the plurality of rungs and to the lower flange of the first and second side rails (12, 14) to enable pivotal movement of each of the plurality of rungs as the foldable cable tray is displaced between unfolded and folded positions, the locking device being insertable into both the lower flange locking hole and the rung locking hole (52, 56) upon the foldable cable tray being displaced to the unfolded position; and wherein the foldable cable tray is lockable in the unfolded position upon insertion of the locking device through any one of the plurality of lower flange locking holes in the lower flange and into an adjacent rung locking hole (52, 56) of any of the plurality of rungs to prevent the plurality of rungs from being moved; characterized in that a first angular cut and a second angular cut are defined at the first end portion and at the second end portion of each of the plurality of rung members respectively, to allow them to pivotally move with respect to the side rails (12, 4). a first side rail; a second side rail, the second side rail parallel to the first side rail; each of the first and the second side rails (12, 14) including a web and a lower flange; each of the lower flanges comprising a plurality of lower flange locking holes and a plurality of lower flange mounting holes; each of the first and the second side rails (12, 14) including a web and a lower flange; each of the lower flanges comprising a plurality of lower flange locking holes and a plurality of lower flange mounting holes; a plurality of rungs movably connected to the first and second side rails (12, 14) to transit the foldable cable tray between unfolded and folded positions; each of the plurality of rungs comprising a rung mounting hole (50, 54) and a rung locking hole (52, 56) at a first end portion and at a second end portion thereof; a locking device configured to lock each of the plurality of rungs to the lower flange of the first and second side rails (12, 14) by inserting the locking device through the lower flange locking hole and the rung locking hole (52, 56) when the foldable cable tray is in the unfolded position and a plurality of movement devices, each movement device of the plurality of movement devices being secured in the rung mounting hole (50, 54) of a rung of the plurality of rungs and to the lower flange of the first and second side rails (12, 14) to enable pivotal movement of each of the plurality of rungs as the foldable cable tray is displaced between unfolded and folded positions, the locking device being insertable into both the lower flange locking hole and the rung locking hole (52, 56) upon the foldable cable tray being displaced to the unfolded position; and wherein the foldable cable tray is lockable in the unfolded position upon insertion of the locking device through any one of the plurality of lower flange locking holes in the lower flange and into an adjacent rung locking hole (52, 56) of any of the plurality of rungs to prevent the plurality of rungs from being moved; characterized in that a first angular cut and a second angular cut are defined at the first end portion and at the second end portion of each of the plurality of rung members respectively, to allow them to pivotally move with respect to the side rails (12, 4).