Double hung egress windows feature two panes of glass and are normally designed so that both the top and bottom sash can be raised and lowered.
Egress window size chart double hung.
Rough opening sizes shown are for frame construction.
However you must remember that life safety is much more important than the wallet.
Consult a silver line dealer for other rough opening size information such as with masonry or block applications.
The overall size of this smallest double hung egress window is 14 85 sq.
Irc codes for egress.
Anderson s double hung sizes.
Ft almost twice the area of the egress casement window shown.
They also need to be relatively large to meet the minimum size requirement for egress windows needing a space 28 inches to 60 inches wide and 23 5 inches to 60 inches high.
Bold type indicates window may meet egress clear opening criteria of minimum 20 net opening width minimum 24 net opening height and minimum 5 7 sq.
Slider windows are minimally 4 0 by 4 0.
Maximum sill height above the floor 44.
Clear opening height 24.
Minimum size gliding egress window gliding windows with horizontally sliding sashes that always fill half the possible window opening area also have to be big to meet egress requirements.
Does not apply in all jurisdictions.
Installing egress windows can be a rather costly procedure especially if you have to be breaking walls to do it.
Again watch the maximum sill height.
I ve seen a 2 6 wide by 5 0 high egress window but not all manufacturers make this window size.
Clear opening width 20.
To meet egress a window must comply with all four irc requirements.
2nd floor and above.
Minimum clear opening sq ft 5 7 sq ft.