My external back door and door-frame are made of wood, were installed 13 years ago and are, for what it is worth, painted white. The top and both sides of the frame contain slots along their entire length. There are draught excluding strips made of white plastic fixed into the slots. The excluders fit into the slots so precisely that they have stayed in place for 13 years without the use of glue, pins, nails or screws. I can pull the excluders out and then click them back into exactly the same place. In places the plastic is, however, worn out. I have looked in several stores and on-line for replacements but have not been able to find any excluders of this type on sale. Is this type of draught excluder still available anywhere?