completely exited from the freezer compartment 13 also a rear engagement projection 64 is formed in the rear area of the guide rail 60 the rear engagement projection 64 determining an insertion of the lower storage basket 28 if the lower storage basket 28 is completely exited from the freezer compartment 13 due to a use 39 s carelessness this may cause the user to be hurt in this respect the front engagement projection 63 would block the lower storage basket 28 from being completely exited from the freezer compartment 13 thereby preventing the user from being hurt in addition when the lower storage basket 28 is inserted in the freezer compartment 13 a position of the lower storage basket 28 to be inserted is determined by the lower engagement projection 64 whereby the lower storage basket 28 is blocked from colliding with the body cabinet 10 thereby preventing the lower storage basket 28 from being damaged as illustrated in fig3 to 5 the lower storage basket 28 comprises a lower basket body 29 formed with a plurality of wires 71 shaped with a grid and a cover 30 coupled to the front of the lower basket body 29 on the rear of the cover are formed hooks 30 a coupled to the wires 71 of the lower.