poles [3]
Rods of various shapes and materials from which a curtain hangs.
traverse rod 
Rectangular metal rod that adjusts to the exact width of a window and along which the carriers move, activated by an operating cord.
fastening device 
Part solidly anchoring the spring housing to the wall or floor.
pulley 
Device equipped with a sheaved wheel around which the operating cord winds in order to pull the carriers.
yoke 
Frame holding the pulley’s spindle.
spring housing 
Casing protecting the spring that keeps the cord and pulley under tension.
tension pulley wheel 
operating cord 
Narrow rope attached to the master carrier; it is used to open and close the curtains.
overlap carrier 
Master carrier that closes the two curtain panels one in front of the other.
master carrier 
Carrier attached to the operating cord; it pulls the other curtain carriers.
end bracket 
support 