How much smaller depends on how much you d like your artwork to be covered.
Mat size and openings.
So the photo doesn t have to be aligned precisely with the mat.
So a mat for a 5 x 7 picture will have an opening of 4 5 x 6 5.
The opening size of the mat board is the inner measurement of the mat board.
For instance if you have a photograph you want to frame and a frame that is too large but perfectly suits the image you ll need to select a mat sized to the frame with an opening the size of the artwork.
Standard frame and mat sizes in inches.
Multi opening mats are a perfect way to incorporate multiple images into one frame.
Artwork larger than 18 x 24 we cut the exact mat opening 1 2 smaller for artwork larger than 18 x 24.
An opening size that is smaller will cover of your artwork on all sides.
For 8 1 2 x 11 paper the largest 2 3 you can easily make is 7 x 10 1 2 chas.
If you d like the edges of your artwork to be covered by the mat board the opening size should be smaller than your artwork size.
If you have an 8x10 image your mat opening always needs to be slightly smaller than the image itself.
The mat overlaps the artwork 1 8 on all four sides.
The image above shows the frame and image sizes of our standard mat openings.
16x12 photo mat with heart and 4 openings 4x6 pack of 5 multi opening heart4x46multisingle1216 msrp.
Traditionally the mat will cover about 1 4 inch of the image below.
Typically this slop is 1 4 so you have 1 8 on each side to work with.
Smaller will cover of your artwork how wide should a picture mat be.
8 x 10 4 5 x 6 5 5 x 7 11 x 14 7 5 x 9 5 8 x 10 16 x 20 10 5 x 13 5 11 x 14 20 x 24 15 5 x 19 5 16 x 20 24 x 36 19 5 x 29 5 20 x 30 30 x 40 21 5 x 31 5 22 x 32.
The mat opening will be slightly smaller than the suggested picture size.
The exact mat opening size for an 8 x 10 image is 7 3 4 x 9 3 4.
Choosing your opening size.
This will ensure that the image will not fall through the front of your mat.
Sometimes the pieces of the puzzle you already have will make choosing a mat size very easy.
Lightroom makes it easy to print exactly the size you want just set the margins and cell size to the size print you want.
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Generally the mat will cover 1 4 on each side of the image.
This allows the mat to overlap the image slightly holding it behind the frame.
The exact mat opening size for a 20 x 24 image is 19 1 2 x 23 1 2.
Feb 20 2013 this pin was discovered by john cummings.