Hikari Simple Inner Window Frame Rail Kit for Middle Windows, Light Oak, with Anti-Mold and Antibacterial Agent, PTK-N 1 S

Catalog number: PTK-N Features: ●When installed with an outdoor temperature of 0°C and an indoor temperature of 20°C, the temperature at the center of the glass surface improved from 7.7°C to 14.7°C. (Tested with window size W1235 x H1370) ●Simply attach it to the inside of an existing window to achieve energy savings, a significant increase in heating and cooling efficiency, and reduced condensation. ●When installed with an outdoor temperature of 0°C and an indoor temperature of 20°C, the temperature at the center of the glass surface improved from 7.7°C to 14.7°C. (Tested with window size W1235 x H1370) Uses: ●Attach to the inside of an existing window to turn it into a double-glazed window. ●Reduces condensation in winter, saves on heating and cooling costs, has thermal insulation effects, and keeps the room warm. Specifications: ●Color: Light Oak ●Suitable size: For sliding windows with a width of 1830 x height of 915 mm or less ●Suitable window: For middle windows ●Package size (mm) Height x Width: 1860 x 83 ●Window insulation performance 2.44 times (from standardized heat transfer resistance) JIS insulation grade H-4 grade Values ​​using 4mm thick light polycarbonate hollow board. (Polycarbonate hollow board is sold separately.) Material/Finish: ●PVC Set contents/Accessories: ●4 frames ●1 upper rail ●1 lower rail ●1 side cover ●Scratch prevention felt ●Double-sided tape Note: ●This product alone cannot be used to create a double-glazed window. ●Please purchase 4mm polycarbonate hollow board sold separately. ●Cutting work is required. ●We do not accept direct shipping to private homes.