includes an upper wall part 58 and a continuous downturned peripheral lip 60 formed integral with lid wall part 58 are a plurality of grids 62 which provide additional strength and a continuous inner lip 64 lid 38 is swingably connected to lid 36 by a pivot pin 66 which extends through a flange 68 of lid 38 into ears 54 between a closed position fig1 and an open position fig2 in the closed position lid outer lip 60 abuts trough wall part 30 and lid inner lip 64 is positioned outwardly of box side wall 20 to form a watertight seal a lock 70 may extend through trough wall part 30 and mate with a catch 72 on lid wall 58 to lock box 10 in the closed position tool box 10 is shown stored in the back of pick up truck 12 in fig1 with lids 36 38 and 40 in the closed position tool box 10 is supported above truck bed 14 by trough lower wall parts 28 which rest atop side rail ledges 18 as shown when rainwater or other moisture falls between the spaces between lids 36 38 and 36 40 it is diverted by lid lower wall 50 and upstanding lip 52 into trough 26 where it drains out through holes 34 should water accumulate on top of either pivoting lid 38 40 this water is also directed by wall 50 and lip 52 into trough 26 when the lids are opened any moisture which enters through the side seams between lids 36 38 40 and trough wall part 30 is directed into the trough 26 by lips 48 64 and away from the interior of tool box 10 it is understood the above description does not limit.