Roller for an insect net

The invention enables one to guarantee, yet allows the removable of the screens used in combination in the window frame can be easily improved operability of the screens and solid fixed relates to screens for Call Blocking. That is, the combination of this invention is the network home (11a) is 12, this coupling is formed in the upper front, the lower side is formed in the sash frame 20 is fitted to the rail 21 is formed a locking projection (22) at the top groove (11b) for screened Call Blocking (1) for binding to the corner of a window screen frame 10 is made of the frame 11 is in the longitudinal direction to the opening side of the reinforcing projection (11c) formed in the formation and the engagement groove (11b) according, screens Call Blocking (1) has connecting grooves (11b) before and after the ┛-shaped plate and the roller 2 is combined and the outer edge portion in close contact with the reinforcement protrusion (11c) has the same width in the horizontal side (3) (4) and, front and rear plate 3 (4), the internal combustion part connecting piece (5) connecting the ┛ shape and the front and rear plates 3, 4, the outer edge portion side of the horizontal side and the arc-like shape which are formed on the inner edge side of the vertical side of the examples of which includes a locking step (6) (7), the sash frame 20 and the window screen it is possible to design the clearance between the frame (10) a little iron in accordance with the installation and maintenance of the window screen frame 10 This huge task that will be done easily and quickly, even in installed state can be maintained in a solid fixed frame screens (10). For Call Blocking insect screen, a roller, engaging shoulder, screen door frame, window frame frame