1-Tilt &Turn UPVC High Energy Efficient Window 47″x37.5″ Made In USA
Pane’s thermal insulation – Neutralux Argon Ug = 1.1 W/m2k. Inner space filled with argon. Tilt & Turn HIGH ENERGY EFFICIENT. Double glaze : 0.2 or betterDouble glaze : 0.48 or better. Acoustic Insulation: Double glaze: Rw = 42dB (VG4-4/24/4) Rw = 43dB (VG4-4/22/6 set).