German Energy Efficient Rehau uPVC Black Frame Slider Windows Double Glazed on China WDMAProduct Description UPVC American Slider Window Window Type: UPVC sliding window Opening Style: horizontal sliding Frame Material: UPVC UPVC Profile Type: J lap, J channel or flush mount Size: customized Function: Heat & Sound Insulation Detailed Images Packing & Delivery Standard Package carton wrap the angle with plastic outside Optional Carton Package palstic inner package with carton wrapped angle and carton outside package Optional Wood Case