A2: 420 x 594 mm (16.5″ x 23.4″)
A3: 297 x 420 mm (11.7″ x 16.5″)
A4: 210 x 297 mm (8.3″ x 11.7″)
A1 Frame with A2 Mount – John Lewis
A2 Frames – John Lewis / Amazon UK
A3 Frames – John Lewis / Amazon UK
A4 Frames – John Lewis / Amazon / Habitat
IKEA frame sizes of 30×40, 40×50, & 50×70 are available to buy online & in-store.
Please note that Ikea frames with mount hide some of the paper so are not ideal for all prints.