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20 mm magnetic dots are ideal for displaying a note, organising a whiteboard or holding a photo on a metal surface. However, not all magnetic dots are the same, and an attractive colour or a promise of “strong adhesion” does not necessarily mean you have found the right option.
Before buying your round magnets, check their actual diameter, the type of coating and the surface on which you plan to use them. These factors directly affect how securely documents are held, how easy the dots are to reposition and how long they will last.
At 20 mm in diameter, a magnetic dot offers an intermediate contact area, making it suitable for sheets of paper, photos and lightweight notes. However, this diameter alone does not determine its holding strength. The weight of the document, the thickness of the material and the quality of the metal surface also play a part.
For displaying A4 sheets, a timetable or a few memos, 20 mm magnetic dots can be perfectly suitable. If you need to hold several sheets together or secure a heavier object, it is better to spread the load across several magnets.
Assorted-colour magnets make visual organisation easier: one colour for priorities, another for meetings and a third for documents that need attention. However, the coating must be even enough to provide a good grip and prevent scratching the surface when you move the dot.
Colours are therefore a genuine organisational benefit, but they do not automatically indicate the magnet’s strength. Always check the product details to confirm the material and dimensions.
A standard whiteboard is not necessarily magnetic. A painted wall, glass or wooden surface will not hold a magnetic dot on its own. Before ordering your noticeboard accessories, identify the surface carefully: a magnetic board, metal cabinet, fridge or compatible panel.
On a non-metallic surface, choose an adhesive solution or a hook-and-loop fastening system instead. These products do not replace office magnets, but they may meet a completely different fastening need.
The 20 mm diameter offers a good balance between visibility and discretion. It remains visible enough to distinguish several categories on a board, while still being suitable for securing lightweight documents.
Remember to check the pack size too. The Deli Magnetic Dots 20 mm model is sold as one tube, with the exact quantity per tube listed as variable in the description. This is an important detail if you need to equip several offices or a classroom.
These dots are made from a magnetic material with a coloured coating. This design is suitable for the display and visual organisation uses stated by the manufacturer. It should not be confused with a wooden support or an adhesive dot.
To preserve the finish, remove and reposition the magnets gently, without sliding them abruptly. A soft, dry cloth is all you need to clean them. Also avoid exposing them to extreme heat.
Place the dot directly onto a clean, dry magnetic surface, then press lightly to ensure even contact. One magnet may be enough for a lightweight sheet; for a thicker or larger document, several fastening points will distribute the weight more effectively.
Small parts present a choking hazard. These products are not suitable for children under three years old. Magnets must also be kept away from pacemakers and other medical devices. Do not swallow them, and keep them out of the reach of young children.
Why this choice suits this profile: Their clearly visible format and varied colours make them easy to use for the first time on a magnetic whiteboard, fridge or metal cabinet.
The 20 mm diameter and magnetic material are clearly stated. This means you are not choosing based solely on the colour or a vague promise of adhesion.
20 mm format, coloured coating, immediate installation and tube packaging.
Why this choice suits this profile: This solution is designed for those looking for a structured fastening method on smooth, metal or painted surfaces, without using a conventional magnet.
The product details specify the compatible surfaces, indoor use and stated maximum load of 1.5 kg. This is not a magnetic solution, but an alternative for surfaces that are not magnetic.
12 pairs of 22 mm dots, hook-and-loop fastening and reuse advertised up to 5,000 times according to the product details.
Why this choice suits this profile: This larger format is easier to spot on a large noticeboard or in a classroom where colour codes need to be recognised at a glance.
Its 30 mm diameter allows you to compare it directly with the 20 mm format you are looking for, without presenting the two references as equivalent.
30 mm diameter, assorted colours and designed for displaying documents on a magnetic surface.
We have brought together a complete, real-time updated selection of products that meet these selection criteria, as well as European safety requirements.
Yes, provided that the whiteboard has a magnetic surface. They can hold sheets of paper, photos, notes or lightweight timetables. If the board is not magnetic, you will need to choose another fastening method.
There is no universal figure. Holding strength depends on the total weight, the thickness of the paper, the surface and the quality of contact between the magnet and the support. For several documents, distribute the load using two or more dots.
It depends on how often they are handled, the condition of the coating, heat and storage conditions. Cleaning them with a soft, dry cloth and using them on a clean surface will help preserve their condition.