JG/T176-2007 Standard
1. Size of the transmission device groove(U groove)

2. Size of inward casement window’s profile
A. Size of profile 20/12/9(13)

B. Size of Installation structure

3. Size of outward casement window’s profile
A. Size of profile 20/12/9(13)

B. Size of Installation structure

Instruction for profile’s size
1. (20=12+8) 12 is for the hinge space, 8 is the overlap amount of sash and frame.
2. 9 is 9 series. 13 is 13 series.
3. 3(3.5) is the size after compressed sealed gasket, also called hinge channel, 3 or 3.5.
4.  Size>23 is the installation space of transmission device for inward casement window, size>31 is the installation space of outward casement window.
5.  Methods to distinguish the inward and outward casement window. A. Glazing gasket is in the indoors. B. Model Z is inward casement window. Model T is outward casement window.
6.  The profile of the inward and ward casement window is the same.