Historic-type window EV47/EV47 is designed according to the historic window structure, when there is no need to significantly improve their energy efficiency. Both sashes are 47mm thick, both with single glazing (usually 4mm, up to 8mm thick glass is possible). The inner sash has 1 rubber sealing contour. For both sashes, we use modern Roto NT fittings, usually withT-shaped decorative handles. Concealed fittings may be selected for rectangular sashes.
Thermal conductivity coefficient of the window UW=2.0 W/m2K (calculated according toDIN EN ISO 10077-1), sound insulation around28-30 dB.