double glazed replacement vinyl clad sash porch upvc sash tinted glass sliding window back doors on China WDMA exterior 5) Self-locking when the power

5) Self-locking when the power is off

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Switching between two temperature ranges

Thermal Break Aluminum          Glass Clear glass: 4mm-12mm single glass

double glazed replacement vinyl clad sash porch upvc sash tinted glass sliding window back doors on China WDMA exterior 5) Self-locking when the powerProduct Description black double glazed replacement vinyl clad sash porch upvc sash tinted glass sliding window back doors UPVC windows, commonly referred to as vinyl windows. An unplasticised form of PVC, these sturdy window frames have been popular in Europe and America for many years owing to their durability and low maintenance. UPVC windows can withstand extremes of heat, cold, wind, rain and snow without corroding, peeling, chipping or flaking.