Drilling. Aluminum windows of the box fan assembly generally adopts screw connection, therefore, whether it is horizontal and vertical rod assembly or fixed fittings, need to drill in the corresponding position.
Drilling profile, with a small bench or drill, the former because of a worktable, so can effectively guarantee the accuracy of hole position; while the latter is because of the ease of handling.
Before drilling the hole should be based on the assembly requirements in the profile on the line positioning, the location of the hole is accurate, the aperture is appropriate, it is not on the surface of the profile repeatedly to change the drilling, because once formed, it is difficult to repair. So, we use the Aluminum Window Machine in a normal process.