Custom Poster Frames - 24" X 36" or 27" x 40"?

Hello everyone!!

Have a dilemma here, having my trim crew building custom Knotty Alder poster frames to match the rest of my trim and don't know which dimensions I should build them at. These frames will be made for easy removal of the poster as I like to change them regularly.

Should I go with a 24" x 36" frame which gives me more options (many movie posters come in both 24" x 36" and 27" x 40") and just cut down the 27" x 40" to fit if there is no 24" x 36 available? From the 27" x 40" posters I have now they look to be easily cut down to a 24" x 36" poster with no real viewable poster damage.

Or should I have them built to 27" x 40" and limit myself to only 27" x 40" posters?

I like the first option, but don't know if anyone else has done this and have any suggestions based on their experience.

Thanks in advance!

So what do you do when you want to use a 24" x 36" in your 27" x 40" frame? Do you use a matting???

I Never thought about that as a solution to when I want to use a 24" by 36".

Thanks for you input everyone....I told my trimmers to build them 27" x 40".