Fuk licensing pan safety window (patent No. 201420176355.1), mainly used in office buildings, commercial office buildings, hospitals, schools and enclosed balcony at home, compared with ordinary household balcony window, its technical advantages are mainly reflected in: 1, feet Snap way more reasonable and more stable. 2, between the upper and lower transverse multi-channel fan box seal seal, vertical strip sealed using more dense. 3, the outer chamber toward the installation of drainage tailgate, improve water tightness. 4, using the outdoor hypotenuse designed to improve the drainage performance. 5, through the design of self-tapping screw holes, so that borders can be self-tapping screws and connecting them more closely, installation accuracy is also higher. 6, in the same plane state, helping improve prevent infiltration of rainwater from the horizontal and vertical profiles Stitching wall, avoiding the interior layer due to water seepage and produce mildew, cracking, drum kits and other phenomenon. 7, a tape slot design, increasing a strip seal cover not only function, but play a role in retaining plate. Making the whole window watertight greatly improved.