A few options using the AC11 basic library -
If it's a chest freezer your after, then you could use 'Washer 01 11' (In the AC11 Basic Library, under Appliances). Switch off the top option which is 'Control Panel' and it looks sort of right.
You could also use a cabinet object from the 'Kitchen Cabinets' folder - just switch off handles, drawers, sink and splash back, make the counter nosing 0mm - looks like a freezer.
If it's an upright freezer use the 'Refrigerator 11' object, and under 'Structural Dimensions' switch off the freezer option (I know it seems stupid since your after a freezer - it just makes the object have one door instead of two).
Hope that helps a bit.