The gate is 3 meters wide. How long is it to cover the Feng Shui porch?

The size of the entrance screen depends on the entrance area. According to the investigation related public information, the standard size, height: 90- 180cm, width: 4- 160cm, common size: 60x90cm, straight size: 1200 (width) x600 (thickness) x/kloc-0.