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Just so, how do you measure the size of a picture frame?

Measuring your frame To measure the frame, lay it down on a flat surface face down. Remove any backing board, mounts and pictures. You will see the frame has a rebate your mounts and backing and glazing will fit on to. Measure the width and height of the internal size of the frame in mm (Fig 3 & 4).

One may also ask, what is the biggest frame size? Our largest popular size big picture frame is our 24×36 size.

Also to know is, what size picture fits in a 5x7 frame?

Double picture frames have two identical openings that normally fit two 2.5x3. 5, 4x6, 5x7 or 8x10 pictures and are often used for portraits. Triple picture frames, on the other hand, have three openings and normally fit three 2.5x3. 5, 4x6 or 5x7 pictures (8x10's aren't as common due to the large size of the frame).

What size frame do I need for a 20x24 picture?

For an image as large as 20x24 I would not go under 2 inches and I would only do that with a thin frame. 4 inches is probably more ideal, and 5 or 6 will give it more of a gallery look but that will also dramatically increase the cost of the frame due to the size.