I found this gem of an infographic by City Print Design to visually depict paper sizes.
Here's a breakdown of the usual paper sizes we use for our stationery:
A5 + A6 for the invitations (to fit C5 + C6 envelopes respectively)
A0 + A1 for welcome + seating signage
A3 + A4 for smaller event signage and prints
DL for menus and invitations
Business card size for place cards (or close to)
Your standard home printer can print anything up to A4 size, unless of course you are lucky enough to have a special printer that goes up to A3 and do other fancy things.
We can always design to your specifications so just let us know what sizes you want during consultation.
Print Sizes for Framing
Here's a not-as-visually-pleasing representation of frame sizes that I created. Sometimes frames will have an extra mounting card so just keep in mind that the print size you require may not be the same as the frame size. There are frames available for standard A3 and A4 sizes as well.