Size Guide – Americanflat

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How to measure

  1. Measure the artwork, not the wall. Measure the print itself, edge to edge, in inches.
  2. Decide matted or unmatted. Unmatted, buy a frame in your print's exact size. Matted, buy a frame whose mat opening is your print's size.
  3. Check the outer dimensions. The size in the product name is the frame size — the outer edge measures slightly larger because the moulding sits outside it. Exact outer dimensions and depth are in the Product Details section of every product page.
  4. Watch the moulding width on posters. If your poster has text or a signature close to the edge, check the moulding width — a wide moulding will overlap the outermost part of the print. Moulding width is listed on the product page.

Standard print & poster sizes

If you're printing artwork to fit a frame you already have, these are the sizes to print at.

Use Common sizes (inches)
Photo prints 4x6, 5x7, 8x10, 11x14, 16x20, 20x24, 24x30
Square / social prints 4x4, 6x6, 8x8, 10x10, 12x12, 20x20, 24x24
Posters 11x17, 12x18, 18x24, 24x36, 27x40
Documents & certificates 8.5x11 (US Letter), 11x14
A-sizes A4 (8.3x11.7), A3 (11.7x16.5), A2 (16.5x23.4)

A note on 8.5x11: US Letter documents and diplomas are 8.5x11, which is not the same as an 8x10 photo. If you're framing a certificate, look for a frame or mat opening listed as 8.5x11.

Choosing a size for your wall

Gallery walls

Our frames are built with matching outer dimensions across sizes within a collection, so a multi-frame wall lines up cleanly rather than drifting out of alignment.

Still not sure?

Tell us the size of your artwork and where it's going, and we'll tell you what to order. Email help@americanflat.com or use our contact form. We answer messages Monday to Friday and aim to reply within one business day.