It
is mandatory for South and West facing plots to keep a door in
North and East respectively and this door should lie to the right
side of the front door, so that the clock wise movement of the
forces is maintained, inside and outside of the building.
There seems to be no basis for stipulating the size of the doors. Normally
doors are available in 3 1\2'x7', 3' x 6 1/2' and 3' x 7' which includes
the frame as well. but it is important that the total surface area of
Doors in North and East must be more than those facing West and South.
Please also note that it is best to keep the doors inside the house in
every room in the inside in North of North East or East of Norteast for
best results.
Again the material used for doors does not have any effect on Vaastu.
You can certainly go for any wood you like starting from Teak which
is the costliest to Rubber wood which is cheap. Similarly for bathrooms,
toilets etc., you can go for sintex doors. Recently metallic doors
with 'PUF' insolation has also come to the market and these can be
certainly used. The same principle applies to the material for windows
and ventilatars. These can also be made out of Steel.