Warema
Warema W1: Production period: 1986 to early 1993—with a folded, square box, 8.5 mm wide pull cord
Warema W2: Production period: January 1993 through 2000—end cap with large slotted screw, fabric guide tube inside the casing, casing halves separated at the bottom, pull cord 10 mm wide with sewn-in steel pin
Warema W4: Manufactured from January 2000 through late 2004 Warema W5: Manufactured from January 2000 onward;
W4 and W5 have end caps with rounded bottoms and Phillips-head screws, round upper housing section, housing halves separated at the rear, 10 mm wide pull cord
Warema W6: Manufactured from 2002 onward—lower cover is rounded; drive mechanism: toothed belt; maximum size 400 x 450 cm
Warema W8: Manufactured from 2006 onward—upper cover is rounded; drive mechanism: toothed belt; maximum size 600 x 600 cm
