Winding drum for sliding system S4, with opening height up to 3300 mm. Max. cable diameter: 5 mm. Max. door weight: 500 kg per pair. Max. drum diameter: 218 mm. Max. lift height: 3300 mm. Drum supplied with 2 safety windings. Spring calculation as for 850-11. Right (black) and left (red) couple.
Packing: 15 – Weight: 1,6838 kg per pair.