Meeting Stiles: The limiting strength factor on sliders without lowlights will be the strength of the meeting stiles. The tables below show how the strength of windows will change as the meeting stiles change.

Transoms: On frames fitted with overlights (transoms) the transom will in most cases be the weak link. Refer following page for transom options.

Sliding Window Ratings
Two panel windows type 'SF' and 'FS'
Frame Height	Frame Width	Light Rating	Medium Rating
1300	1210	719Pa	1364Pa
1300	1510	604Pa	1137Pa
1300	1810	537Pa	1003Pa
1400	1210	563Pa	1155Pa
1400	1510	-	956Pa
1400	1810	-	836Pa
1500	1210	-	992Pa
1500	1510	-	817Pa
1500	1810	-	708Pa