The ornamental design for a lockablefoodstoragecontainerinsert for a refrigerator, as shown and described.
FIG. 1 is a perspective front view of a lockable food storage container insert for a refrigerator, showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a left view thereof;
FIG. 4 is a left side view thereof with a right side view being a mirror image;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a front perspective view of the lockable food storage container insert for a refrigerator depicted with two (2) of four (4) front doors in an open position;
FIG. 8 is an environmental front perspective view of two (2) lockable food storage container inserts for a refrigerator depicted in a stacked orientation; and,
FIG. 9 is an environmental front perspective view of four (4) lockable food storage container inserts for a refrigerator depicted in a stacked orientation within a refrigerator.
The broken line showing of additional lockable food storage container inserts for a refrigerator shown in FIGS. 8 and 9 and of a refrigerator in FIG. 9 are for the purpose of illustrating environment and forms no part of the claimed design.