roller shutter window
PU foam insulated slat and Tutular motor drived window shutter
1) GR37,GR42,GR55 aluminum slat, PU foam insulated
2) Density is moren than 60kgs/m33) Tubular motor drived4) could open or close by manual when power off
5) heat preservation
6) The slats have holes inside,could let sunlight come through.
roller shutter window