What IS an Ecoflap?

Technical drawing illustration of final product
Basically, an Ecoflap - completely draught proof - will replace the brushes, seals and outward opening gravity flaps on the inside of the letter box used to help keep draught out.
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Measurements have been modified
There is a change to original sizes - the width increases from 255mm (10") to 295mm (11.5"). This will now also cover most bolts that secure front letter flaps.
There is now also a 20mm (0.75") wide flange around the Ecoflap to cover any uneven/or untidy hole cuts, once the existing draught barrier is removed. This will also house the Ecoflap fixing screws.
The Ecoflap will accommodate post up to 260mm (10.25") wide and 42mm (approx 1.75") high.
The Ecoflap will draught proof a hole up to 80mm (over 3.125") high and over 300mm (12") wide.Technical graphic illustrated. Progress to About Ecoflap

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