The water-cooled engine's chin radiator sat behind a roller blind shutter, close to the twin-bladed propeller.
The position of the track wheel was altered, and roller blind indicators were fitted.
A roller blind does not have slats but consists of a single piece of material.
I maintain that putting in steel roller blinds of a colour that harmonises with the rest of the building does not materially alter the external appearance.
In 1974 roller blinds were introduced to the range.
The most inexpensive blinds in the 19th century were home-made roller blinds, made of cloth.
Each passenger compartment also included roller blinds over the windows, and an individual radiator fitted to the outer wall and protected with a steel grille.
External parabolic collectors require proper heat insulation, double-glazed windows over the zenithal opening and roller blinds to reduce excessive lighting, glare and heat on sunny days.
