Can the cupboard locks be used on a fridge freezer? Jessica 28 June 2022 11:17 The locks can be installed on most cabinets and drawers, but not on a fridge or freezer door. Related articles Will there be any marks left behind once I remove the cupboard locks? Can the locks be set to an 'always open' mode if there is no need to use the magnetic key for some time? Video - How to use your magnetic keys Comments 0 comments Please sign in to leave a comment.