Frame sizes
From A4 notices to A0 posters, the right frame size makes a display easier to read and easier to place. This guide covers standard A-series options and custom poster sizes so homes, offices, schools and shops can choose with confidence.
Choosing the right frame size starts with the job
Frame size is not only about what looks good on a wall. It also affects reading distance, available wall space, the type of notice being displayed and how often the insert needs to be changed. In a reception area, a small frame can look lost on a wide wall. In a narrow passage, a large frame can feel overcrowded and become awkward near doors, light switches or fire equipment.
We supply snap poster frames from A4 up to A0, along with custom sizes for posters that do not fit standard paper dimensions. The spring-open edges make changes quick, which suits school notices, office communication, clinic information, house rules and promotional posters. If you already know your poster size, start there. If not, measure the space first and then choose a frame that leaves enough margin around it for a neat fit.
A-series sizes for everyday notices and posters
A-series sizes are the simplest choice when your artwork or notice is printed on standard paper. They are widely used for office communication, school announcements and home organisation. A4 is common for close-up reading, while A3 and A2 give more impact in busier areas. A1 and A0 are better where the message must be seen from further back.
- A4: good for room notices, directions, price lists and small information points.
- A3: useful for reception notices, classroom information and shop counters.
- A2: suits corridor displays, promotions and waiting room messaging.
- A1: works well for event posters, window promotions and large public notices.
- A0: best for high-visibility poster display in bigger spaces.
If your insert is already printed to an A-series size, it is usually easiest to match it with the same frame size rather than trimming or reprinting later.
How to compare sizes in a practical way
People often choose too small because the notice looks readable when held in the hand. Once mounted on a wall the same page can be hard to read from even a few metres away. A simple way to compare sizes is to think about reading distance, available wall space and how much information needs to fit on the page.
- Close reading at arm's length: A4 usually works well for instructions, room use notices and detailed text.
- Short to medium distance: A3 or A2 gives better visibility for schedules, announcements and mixed text with images.
- Across a room or foyer: A1 is often the safer choice for promotions and directional messaging.
- Large open area: A0 gives more impact where viewers pass quickly or stand further away.
- Limited wall width: a portrait frame often fits better in passages and between windows.
- Wide visual display: a landscape frame can suit menus, directional panels and timetables.
When in doubt, tape out the outer frame size on the wall first. That quick check can save a lot of guesswork and it helps if the room has low ceilings or narrow columns.
When custom sizes make more sense
Not every poster follows an A-series format. Movie posters, promotional prints, internal campaign sheets and imported artwork often come in custom dimensions. In those cases, a custom snap frame gives a cleaner result than forcing the print into the nearest standard size. It also avoids visible trimming, white borders or a loose fit behind the cover sheet.
Custom sizes are useful where a business has repeat poster layouts, or where a homeowner wants a specific wall arrangement in a passage, playroom or study area. Schools also sometimes need custom sizes for house notices, term planners or event boards. We can help you work from the actual insert size and choose a frame orientation and profile that suits the location. We do not print posters or make custom picture framing, so the best starting point is the final poster or its exact measurements.
Size choice also depends on where the frame will hang
The same poster size can work differently depending on the setting. In coastal areas near Durban, indoor spaces often have bright glare near windows, so larger frames may benefit from anti-glare covers for easier reading. In a clinic or school corridor, the frame should not project awkwardly into walkways. In homes, scale matters more than many expect. A very large frame in a small room can dominate the space while a small frame on a broad wall can look unfinished.
- Homes: A4 and A3 often suit chore charts, artwork and family notices.
- Offices: A3 to A1 are common for reception messaging, compliance notices and internal communication.
- Schools: A3, A2 and A1 work well for classrooms, passages and admin areas.
- Shops and clinics: A2 to A0 can be useful where visibility matters and foot traffic is steady.
- Outdoor or semi-outdoor areas: use an outdoor-rated frame, especially near entrances or covered walkways.
If a frame will be suspended double-sided rather than wall mounted, remember to allow space for sightlines from both directions.
What to prepare before you enquire
Getting the size right is easier when a few details are ready from the start. Measure the insert, confirm whether it is portrait or landscape and note where the frame will be mounted or displayed. If the frame is replacing an old one, check whether the visible area or the full outer frame size is the more important measurement. Those two are not the same, and that catches people out quite often.
It also helps to mention if you need silver, black or a colour aluminium profile, whether the frame will be wall mounted, hung double-sided or used on a freestanding stand, and whether you need anti-glare covers or fixing kits. If you are unsure between two sizes, send both measurements through the enquiry form on our contact page and we can guide you towards the more practical option for your space in Pinetown, Durban surrounds or anywhere else in South Africa.
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Questions we get asked
Should I choose the same size as my poster or a larger frame?
In most cases, choose the frame size to match the actual poster or paper size. If your insert is A3, an A3 snap frame is usually the correct fit.
Can I order a snap frame for a non-standard poster size?
Yes. Custom sizes are available for posters that do not fit A-series dimensions, including movie poster formats and other special layouts.
What if I am not sure whether A2 or A1 is better?
Measure the wall space and think about reading distance. If the message must be read from further away or in a busier area, A1 is often easier to see.
Tell us about the job
Send sizes, materials and where you are through our contact form, and we will come back with the practical options.
Open the contact form