Optimum U-Value – 1.3 W/m2k (using a 24mm Double glass unit comprising 4mm Tough/16mm Argon/4mm Tough Planitherm One). The Box Sash will achieve a
G-Value of 0.50 with this glass speciation.
Optimum G-Value - 0.71 (using 24mm double glass unit comprising 4mm Tough/16mm Argon/4mm Tough Planitherm Total+). The Box Sash will achieve a U-Value
of 1.4 W/m2k with this glass specification.
Optimum Acoustic Rating – RW(C;Ctr) 36db (-1;-4) (using 24.8mm Sound Control double glazed unit comprising 6.8mm Sound Control Laminated/14mm Argon/4mm
Tough Planitherm Total+)
