a little extra
Our draught excluders taper on each end and so when you are measuring
for a custom door size, it is always advisable to allow a couple of extra
centimetres on either side.
if your gap is 100cm, ask for a draught excluder of around 102-4cm --
this will allow you an added centimetre on either side of the gap and
allow for the natural tapering of each end with the seam.