Size
Sizing the mirror to the wall
For vanities: 2–6″ narrower than the countertop. For walls: keep 4–6″ off the ceiling and corners so the mirror floats.
- Vanity: countertop width minus 2–6″
- Height: 30–40″ tall for most baths
- Wall mirror: hold off corners by 4–6″
Edge
Edge profile
The edge is the frame. Flat polish is modern, bevel adds dimension, pencil is the softest.
- Flat polish — modern, minimal
- Pencil polish — softened modern
- Bevel ½″–1″ — traditional, decorative
Mount
Cleat, clip or adhesive
How the mirror attaches changes how flush it sits and how it's serviced.
- French cleat: removable, sits ~½″ proud
- J-channel + clips: flush, semi-permanent
- Adhesive only on small mirrors
Light
Backlit and integrated lighting
LED-backlit mirrors and integrated light bars are popular in primary baths — plan electrical before tile.
- LED perimeter or backlight
- Integrated defogger pad
- Coordinate with electrician at rough-in