I am having trouble locating a pair of replacement external doors. I
want a pair
of 18" wide doors to replace the existing ones. Looking for wood/
double glazed. Any suggestions
for supplier? Have been quoted high prices for bespoke doors but I am
convinced I can get this size
off-the-shelf somewhere (but which shelf?). Have looked through many
standard door catalogues
and usual DIY stores without success, all "standard" double doors seem
to be wider than mine,

Philip