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Downlight There are a lot of sizes and specifications you need to install the shape of the installation of the master will help you open well
Generally have a hole in the hole can be opened, the adjustment can open different specifications of the hole. Just head up the hole above the hole.
You can use a piece of wood, both ends nail nails (specifications for the radius of the hole) a nail long, a nail short, the long nail nail like a hole to open the hole to achieve the hole.
You first need to know the size of the downlight, and then can be two ordinary nails nailed to the woods, the distance between the two nails is half the size of the hole; and then determine the center of the hole, Only nails nail in this central position, and then round the circle like a compass, so that you can break the gypsum board - at this time, a downlight hole to open well.
In addition, building materials stores have finished products sold.
