Hang a black horseshoe on the outside of a West main door with its open end up, like the letter U. Shown as a brahmastra, it removes any number of defects of the door.
A swastik made of gomti chakra on a 5 x 5 inch brass plate is fixed on both sides of a door in the South-South-West, West-South-West or East. It corrects the door defect without demolition and also works when those zones have another defect or are low-lying.
Hang a bandhanwar of good mango leaves, ideally with Om and swastik tied on and a swastik drawn in kesar, on a main door built on a wrong pada. It reduces the ill effect of the door by about 50 percent.
When a person with a debilitated Shani (Saturn) builds, small pieces of shami wood are placed in all four corners first and the iron (steel) is laid on top of them.
For a main door on a wrong West pada, hang a metal toran of copper, brass, bronze, mixed metal or ashtadhatu made as the ashtamangal symbols, or a yellow or white swastik bandhanwar put up on a Saturday.
Hang an ashtadhatu (eight-metal) bell at the main door and ring it on entering. Its sound waves drive away negative energy sitting at the door so that positive energy enters with you.
The main door is the door of fortune: like the two nostrils it draws nature-given positive energy into the whole house and lets negative energy out. Its two shutters stand for ida and pingala, the two breaths that alternate roughly every hour.
Design the main door like a face: two shutters as the nostrils, two small niches as the eyes, two jharokhas as the ears, an Om or swastik as the tilak, and the threshold and upper frame as the lips. Ancient texts say such decoration multiplies the power of the main door many times.
Divide the 360 degrees around the centre of the house into 32 padas of 11.25 degrees each, one for each of the 32 guardian devtas of the outer ring, named E1 to E8, S1 to S8, W1 to W8 and N1 to N8. The pada in which the main door falls tells its result.
In the East, E3 is the best door with abundant wealth and E4 brings government support and respect, while E5 suits administrators only. E1, E6, E7 and E8 should not hold the main door.
In the South only S4 (Grihakshat) gives happiness, peace, prosperity and business profit. S2, S3, S5, S6, S7 (the debt door) and S8 bring lack of children, servitude, suffering, selfishness, debt and disease.
In the West, W4 (Pushpadant) showers wealth and W5 (Varun) also gives wealth, while W1, W2, W3, W6, W7 and W8 bring short life, overspending, loss of money, government trouble, disease and a destructive mind.
In the North, N3 brings sons and wealth, N4 (Bhallat) is the best of all 32 doors with windfall wealth, and N5 gives wealth with dharma and fame. N1, N2, N6, N7 and N8 bring suffering, enemies, family stress, faults in women and poverty.
Large business doors and shop shutters often span two to four padas. When the favourable pada, for example S4, is fully included and open, the door gives the results of that pada.