Is the peephole (door eye) in the main door a dosh?
No. It is part of the door system and is sealed with a lens or glass, so it is not a chhidra yukt dwar. Only a hole passing right through the door makes a chhidra yukt (holed) door.
Related questions
A relative's flat had its door at E1. After buying the adjoining flat and removing the common wall the entrance came onto N4, and soon their ancestral land was acquired for a bullet-train project and they received crores. Is this the N4 effect?
Yes, this is chhappar phaad wealth, which comes as soon as N4 opens. E3, N4 and W4 are the three vipul sampada dwar (abundant-wealth doors). Opening them virtually gives perhaps 1 percent of the actual result, so do not believe the heavy promotion of virtual doors; it is the actual opening that brings the result.
A shop shutter often spans four padas, such as S3, S4, S5 and S6. Which pada decides the results?
Do not worry that S3 and S6 are also open: if the good pada, S4, is open within the shutter, the shop gives the results of S4, because when energy enters from every part, positive and negative, the result follows the positive. Trouble comes only when the good part is closed and the bad parts are open; then keep the shutter closed and open a small door on the good pada instead. In combination doors for business, always keep the favourable pada fully open.
Are three doors in a straight row inauspicious?
They can be either. In the South and West, from where negative energy comes, three doors in a row on padas where doors should not be are inauspicious. In the North and East they are auspicious: temples, all built facing North or East, have three or five doors in a row, as do royal palaces, so the blanket belief that they are bad is a myth.
Can doors be opened anywhere by vastu, or must the birth chart be checked?
Check the birth chart. If the Sun in the chart is debilitated and you forcibly open an E3 or E4 door, it will be wrong and not appropriate at all.
Can the main door be in the North-North-East?
No, the main door cannot be in the NNE.
Can we also get the professions and diseases linked to each door pada?
Yes, every entrance has its related profession and the type of disease it can bring, and some padas are rog dwar (doors of disease). The teacher promised two charts, one for diseases and one for professions, since a complete door study takes seven to eight hours; residential and industrial doors are studied in detail in the industrial vastu module.