MAGMAN Magflap Mk3 Letterbox Draught Excluder - Vertical
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Product Information
Full details
The MAGMAN Magflap Mk3 is an essential home insulation upgrade for homeowners dealing with persistent cold draughts entering through vertical portrait-style letterboxes. By utilizing advanced magnetic seal technology, this device effectively blocks airflow and minimizes heat loss, helping to maintain a consistent indoor temperature and improve overall energy efficiency. While the unit provides a superior seal compared to traditional brushes, users must ensure their letterbox matches the specific 220mm by 65mm dimensions for a proper fit.
All features
| Model Part Number | Magflap Mk3 |
|---|---|
| Brand | MAGMAN |
Extended Product Information
FAQs
Will this work on a horizontal letterbox?
No, the Magflap Mk3 is specifically engineered for vertical, portrait-oriented letterboxes.
Do I need a drill for installation?
Installation is designed to be simple and typically requires only basic hand tools to secure the unit internally.
Can I paint the unit?
The unit is finished for durability; applying paint may interfere with the magnetic seal mechanism.
Does it block sound as well as air?
The magnetic seal provides an effective barrier that significantly reduces noise infiltration alongside cold air.
Is the cork gasket replaceable?
The cork gasket is designed for long-term durability, but please contact support if you require replacement parts.
Troubleshooting
The flap does not snap shut firmly
Check if any debris or mail fragments are stuck in the magnetic seal path and clear them.
Unit feels loose after installation
Verify that the mounting screws are tightened uniformly and that the door surface is completely flat.
Pros and Cons
Pros
- Superior thermal insulation compared to bristle alternatives
- Silent operation thanks to the brushless design
- Easy internal installation requires no specialized tools
- Robust steel construction ensures long service life
- Eco-conscious design with cork gaskets
Cons
- Limited to portrait-oriented letterboxes only
- Strict size requirements (220mm x 65mm) leave no room for variation
- May not fit antique or non-standard ornate letterbox frames
Setup, Compatibility & Care
Installation of the Magflap Mk3 is designed for DIY efficiency. Because it is installed internally, you do not need to perform exterior work.
- Ensure the internal letterbox aperture measures exactly 220mm in height and 65mm in width.
- Clean the surface of the door thoroughly to ensure the cork gaskets provide an airtight seal.
- Position the unit according to the provided instructions and secure it using the internal fastening points.
For maintenance, wipe the steel surface occasionally with a soft cloth to remove dust. Because there are no bristles, you will not need to vacuum or pick out trapped debris. Inspect the magnetic seal periodically to ensure no large debris is preventing the flap from closing completely.