YHC 300 IG Curtain Wall System SINGLE GLAZING OPTIONS The following single glazing options are available for YHC 300 IG: A. Large Missile Impact glazing must be used below 30'-0 " from grade. Glazing materials may be 5/16 " , 3/8 " , 7/16 " or 9/16 " thick; contact YKK AP for approved glass types. B. Small Missile Impact glazing may only be used above 3'-0 " from grade. Glazing materials may be 7/16 " or 9/16 " thick; contact YKK AP for approved glass types. C. Non-Impact glazing (1/4 " non-impact glazing) may be used above 60'-0 " from grade. Heat treatment as required to meet local building code requirements. Note: Interior glazing materials will be different for 90 psf and 130 psf Small Missile Impact glazing. Page-6 04-1008-05 | Effective Date: Oct 31, 2024