We suggest for your bathroom mirror or shaving cabinet to be slightly smaller than the size of your vanity if your vanity is over 600mm.
There are no hard and fast rules when it comes to the size of your bathroom mirror and shaving cabinet. It depends entirely on your personal preference, the size and shape of your bathroom.
Many people opt for a large bathroom mirror, sometimes taking up most of the space on a wall. This has a number of benefits, including making your bathroom look bigger, by reflecting more light around the room.
IAnother great option for double vanties is to have 2 smaller mirrors or shaving cabinets above each basin.