Help ! Our house is suffering from a very bad draught through the
The letterbox is a vertical slot with a flap that opens inwards and
hinges on the (short) top edge. There is a cross-slat in the door
behind the letterbox that obscures the top edge of the slot. It is
therefore impossible to fit the standard brush type insulating frame.
Instead, I woud like to try to fit an additional external flap that
completely covers the slot that lifts outwards - but where could I get
something like this from. I can't find anything like this anywhere.
Merry Xmas and many, many thanks to anyone that can help.