MT70E Very Light Neutral Low-E UV Film

Low-E demonstration

How it works

Key Features

  • Museum-Grade UV filter
  • Exceptional winter heat retention
  • Additional summer heat reduction
  • Non-reflective, very pale neutral finish

About MT70E very light neutral Low-E UV Film


Sun-X MT70E is a revolutionary combination of museum-grade UV filtration, and exceptional improvement in the thermal efficiency of single glazing. It is also near-invisible from inside or out when installed, so is the ideal solution for historic and/or listed buildings who are looking to protect their interiors against sun damage, and save money and carbon emisisons by reducing heating output in winter. 

An example installation - Sun-X has installed this film to a rooflight in Brighton Museum which was experiencing dramatic heat loss & heat gain, and high levels of UV radiation and visible light. Combined with Sun-X MT20 dark neutral filter externally for even greater performance, all of these problems have been solved, and allowed the museum to remove the old unsightly roof blind, opening up the roof space. 


Technical Data

  • Visible light transmission - 70%
  • Visible light reflection - 12%
  • Total solar energy rejected - 51%
  • U-Value 3.31 W/m2K (44% improvement on single glazing)
  • Emissivity 0.06 (94% radiant heat retained)
  • Ultraviolet transmission - <0.1%
  • UV content = 15 µW/lumen
  • Transmission relative to 550nm:
    320nm = 0.0%
    380nm = 0.7%
    400nm = 41%