1). All-uPVC multi-chamber design and multiple weather-stripping deliver amazing energy performance.
2). The most internal chambers: outstanding insulation, noise reduction, thermal efficiency, and strength.
3). Mounting hardware installs through at least 2 uPVC walls for secure, time-tested placement.
4). Hardware: Operator&Lock.
5). Milk white color is valid.
6). Kinds of Glazed are valid( 4/12/15/19/22MM).
7). Can be made with OEM.