How to Choose a Picture Mount: Sizes, Colours and Styles

A mount – the card border that sits between your picture and the frame – is one of the cheapest ways to make a print or photo look far more expensive. This guide explains what a mount does, how to choose the size and colour, and how to measure for one.

What is a picture mount?

A mount is a piece of card with a window (the "aperture") cut into it. Your picture sits behind the card so a clean border frames the image. As well as looking smart, a mount lifts the picture away from the glazing, which helps protect it.

How a mount affects size

A mount lets a smaller picture fit a larger frame. It has two measurements: the outer size (which matches your frame) and the aperture (the window, cut a few millimetres smaller than your picture so the edges are held). For example, an A4 frame with a mount might have an aperture sized for a 7 x 5" photo.

Choosing a colour

  • White and off-white – the classic, gallery choice; suits almost any picture and any room.
  • Black – bold and modern; makes colours pop and works well with monochrome prints.
  • Cream and neutral tones – softer and warmer, a good match for older photos and traditional interiors.

As a rule, choose a mount that complements your picture without competing with it – the picture should always be the star.

Single or double mount?

A single mount is one layer of card – clean and simple. A double mount adds a second, contrasting layer that shows a thin line of colour around the aperture, for a more premium, finished look.

How to measure

Measure your picture, then choose a mount with an aperture a few millimetres smaller on each side so the edges are held in place, and match the outer size to your frame. If in doubt, our mounts come in a wide range of standard sizes to fit popular frames.

Browse our picture mounts and frames with mounts, all with fast, free UK delivery.