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Amazon£53.42Visit shop Horizontal Letterbox Draught Excluder | Front Door Mail Box Strong Magnetically Sealing Letterbox Draft Excluder | Made in the UK | Metal Construction Magflap® MK3 | (Satin Black) | Magman®
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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.
| Model Part Number | Magflap Mk3 |
|---|---|
| Brand | MAGMAN |
No, the Magflap Mk3 is specifically engineered for vertical, portrait-oriented letterboxes.
Installation is designed to be simple and typically requires only basic hand tools to secure the unit internally.
The unit is finished for durability; applying paint may interfere with the magnetic seal mechanism.
The magnetic seal provides an effective barrier that significantly reduces noise infiltration alongside cold air.
The cork gasket is designed for long-term durability, but please contact support if you require replacement parts.
Check if any debris or mail fragments are stuck in the magnetic seal path and clear them.
Verify that the mounting screws are tightened uniformly and that the door surface is completely flat.
Installation of the Magflap Mk3 is designed for DIY efficiency. Because it is installed internally, you do not need to perform exterior work.
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.
