The approximate weight of a panel is the following:
Tempered Single Glazing: 4 - 4.5* lbs/ft2
Insulated Tempered Glazing: 5.5 - 8* lbs/ft2
Tempered Triple Glazing: 6 - 8.5* lbs/ft2
* The higher values applies to taller units
Single Impact Glazing: 8 lbs/ft2
Insulated Impact Glazing: 11 lbs/ft2
For the HSW75, FSW75, CSW75, PrivaSee, and ClimaCLEAR systems the weight of a panel with 1/2" glass is 8 lbs/sqft.
The vertical structural deflection of the header should be the lesser of L/720 of the span and 1/4" under full loads. Structural support for lateral loads (both windload and when the panels are stacked open) must also be provided.
For floor mounted systems (SL70, SL73, SL82, SL60u, WA67u and WD66u, please note that there is no vertical load on the header).
It is recommended that all building loads be applied to the header prior to installing the NanaWall. If so and if a reasonable amount of time has been allowed for the effect of this dead load on the header, only then can the building's live can be used to meet the above requirements of L/720 or 1/4". If not, both the dead and live loads needs to be considered.