Most energy-saving window films are effective during the hot summer season, since they mainly focus
on solar heat reduction. However, in recent years, renovation of existing houses and buildings has
been popular to achieve year-round thermal insulation capacity for energy savings, in line with
society's increasing demands for CO2 reduction. With its excellent heat insulation and solar heat
reduction features, this latest development of Nitto Denko offers one of the best solutions to reduce
unfavorable heat flow through windows, one of the key causes of energy loss, and saves energy
throughout the whole year.
1) Solar heat reduction
The product rejects approximately 40% of solar heat, which improves cooling efficiency during the hot
summer season and blocks more than 99% of harmful UV rays.
2) Thermal insulation
The product shows the industry's top-level thermal insulation performance among the various
transparent window film products currently available. (Heat Transmission Coefficient(*) 3.8W／㎡?K）
Effective reflection of far-infrared rays suppresses heat flow through windows by approximately 35% to
help maintain warmth during winter.
3) Transparency
The film lets through more than 70% of visible light, so that it won't negatively affect indoor
lighting and visibility.
4) Scratch resistance
The product is rub-proof and not easily damaged by wiping.
(*) Heat Transmission Coefficient: An index to measure insulation performance when film is affixed to
glass. Small numerical value is superior in insulation performance and reduction in heat loss when
room is heated.
Derivation of the product name: “PENJEREX” is combined “Pencere” and “reflection”. Pencere means
window in Turkey.
